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Zack Gelof To Undergo Season-Ending Shoulder Surgery

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SEPTEMBER 20, 4:12pm: Martin Gallegos of MLB.com writes that Gelof will head to Los Angeles to undergo shoulder surgery next week, and that he “should” have enough time this offseason to recover and return for Spring Training in 2026.

SEPTEMBER 20, 2:41pm: As expected, the A’s placed Gelof on the 10-day injured list today.  Left-hander Sean Newcomb was also placed on the 15-day IL due to left elbow inflammation, so Newcomb’s 2025 season will also come to an end.  To fill the two roster spots, the Athletics called up right-hander Scott McGough from Triple-A, and activated infielder Max Muncy from the 10-day IL.

Newcomb quietly posted a 2.73 ERA, 23.3% strikeout rate, and 7.9% walk rate over 92 1/3 combined innings with the Red Sox and Athletics in 2025.  He began the season in Boston’s rotation before being shifted into a long relief role, and the Sox then designated Newcomb for assignment in May and traded him to the A’s.  Assuming his elbow issue doesn’t lead to anything serious, Newcomb should be in line to land a guaranteed big league deal in free agency this winter.

SEPTEMBER 19: Athletics second baseman Zack Gelof suffered a dislocated left shoulder in tonight’s 4-3 win over the Pirates, manager Mark Kotsay told MLB.com’s Martin Gallegos and other reporters during the postgame media session.  Gelof hurt himself diving for a Bryan Reynolds grounder that ended up going for a deflected double, and had to be removed from the game immediately following the play.

The A’s will place Gelof on the 10-day injured list tomorrow, and needless to say, Gelof’s 2025 season is now officially over.  The dislocated shoulder is a rough ending to a season already marked by notable injuries for the 25-year-old infielder, as hamate bone surgery and then a stress reaction in his ribcage prevented Gelof from making his 2025 debut until July 4.

From there, Gelof had just two hits over his first 28 plate appearances before the A’s opted to send him back down to Triple-A.  Gelof was recalled in late August but hasn’t done much better, posting a .606 OPS over 71 PA between August 25 and September 18.  For the season as a whole, Gelof has a miserable 35 wRC+ from a .174/.230/.272 slash line and two home runs over 101 plate appearances.

This makes it back-to-back disappointing seasons for Gelof in the wake of his big 2023 rookie season.  That seeming breakout made it look like Gelof (a second-round pick in 2021) could be the Athletics’ second baseman of the future, but he followed up with an 82 wRC+ and a league-high 188 strikeouts over 547 PA during the 2024 campaign.

More will be known on the severity of Gelof’s dislocation in the coming days, and in a worst-case scenario, his availability for the start of Spring Training may be in jeopardy.  Even if healthy, Gelof cannot be viewed as a lock for an everyday job even in 2026, let alone over the long term.  With highly-touted shortstop prospect Leo De Vries now in the farm system, the Athletics’ future plans may now have De Vries at short and Jacob Wilson moving to second base, so Gelof will need to get healthy and re-emerge in 2026 to get himself back in the picture.

A’s Notes: Estes, Lopez, Harris, Newcomb

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A’s right-hander Joey Estes has undergone surgery to address a herniated disc in his lower back, according to the MLB.com injury tracker. That obviously ends his season a month after he landed on the 15-day injured list. Estes had just been recalled from Triple-A Las Vegas a few days before suffering the injury. He tossed four scoreless innings out of the bullpen against the Mariners on August 24.

That’ll go down as Estes’ only MLB appearance since April. The 23-year-old opened the season in Mark Kotsay’s rotation. Estes was tagged for six runs in each of his first two starts and immediately lost his active roster spot. The A’s optioned him and he spent the majority of the season in Vegas. Estes took the ball 17 times in the Pacific Coast League. He surrendered 5.51 earned runs per nine across 80 innings in that difficult setting.

A 16th-round pick by the Braves in 2019, Estes signed for an overslot $500K out of high school. Atlanta traded him to the A’s as arguably the fourth piece of the Matt Olson return shortly after the ’22 lockout. Shea Langeliers is the only player from that group who has panned out. Cristian Pache and Ryan Cusick have been cut loose.

Estes has occupied a 40-man roster spot since being called up at the tail end of 2023. He took the ball 25 times and logged 127 2/3 innings last year, but he posted an ERA above 5.00 with a modest 17% strikeout rate. Estes still has one minor league option year remaining. He’s not a lock to hold his 40-man spot throughout the winter. If he does, the A’s could send him back to Las Vegas as rotation depth.

Jacob Lopez has a much better chance of securing an Opening Day rotation spot. The 27-year-old southpaw has had a solid first season in Sacramento. The A’s acquired Lopez as part of the offseason deal that sent hard-throwing righty Joe Boyle to Tampa Bay. Lopez has fanned 28.3% of batters faced through 92 2/3 innings. While his 4.08 earned run average doesn’t jump off the page, he carried a 3.28 mark into his most recent start on August 24. Lopez was blasted for nine runs in two innings that day and landed on the injured list with a flexor strain thereafter. It’s fair to conclude he wasn’t pitching at anything close to full strength.

Unlike Estes, Lopez may be able to get back on the mound before the end of the season. The injury tracker notes that the rookie lefty threw a bullpen session yesterday while traveling with the team to Boston. The A’s are keeping open the possibility that Lopez makes an appearance during their final series against the Royals next weekend. That’d probably be a relief outing or very abbreviated start but would allow Lopez to enter the offseason with some positive momentum rather than finishing the year with a season-ending forearm injury.

The A’s are playing out their fourth consecutive losing season (barring a 9-0 finish to get to .500). Yet for the second straight year, they’ve had an encouraging second half. The A’s have had a winning record in each of the past three months. They’re 31-24 with a +66 run differential since the All-Star Break. Most of the credit goes to a talented offensive core. That’s not the entire explanation, as the A’s have quietly gotten excellent work out of a patchwork bullpen despite trading Mason Miller.

Since the deadline, the A’s have an MLB-best 2.81 earned run average from their relief group. They’re middle of the pack in strikeouts, walk rate, and whiffs. They’ve certainly benefited from an MLB-low .247 average on balls in play, but it’s still impressive production from an inexperienced group. Only Sean Newcomb, a journeyman brought in from Boston in a late May DFA trade, has even two years of service time among A’s relievers.

As MLB.com’s Theo DeRosa wrote this week, the A’s have found that success without many set roles. They haven’t had a designated closer since the Miller trade. Hogan Harris has picked up his first four career saves to lead the team over that stretch. He’s one of five relievers — Newcomb, Michael Kelly, Tyler Ferguson and Osvaldo Bido being the others — to record at least one save. (Bido’s was of the three-inning variety in a blowout victory.)

Harris, a pure reliever this season for the first time in his career, has become Kotsay’s most trusted leverage arm. He carries a 3.30 ERA with a solid 23.3% strikeout rate across 60 innings. Harris’ command comes and goes, but he looks like a solid bullpen piece whom the A’s have under club control for another five seasons.

Meanwhile, Newcomb has turned back the clock with his best season since at least 2019. The former first-round pick owns a 1.75 ERA while striking out a quarter of opponents over 51 1/3 innings since the A’s reacquired him. His 7% walk rate is the best of his career, and he has been lights out (0.96 ERA in 28 frames) in the second half. Newcomb will be a free agent and has certainly pitched his way to a major league deal after settling for a non-roster contract with the Red Sox last winter.

Athletics Select Scott McGough

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With rosters expanding from 26 to 28 today, the Athletics made a number of moves. They activated right-hander Luis Severino from the 15-day injured list, recalled infielder/outfielder Max Schuemann and selected right-hander Scott McGough. Right-hander Eduarniel Núñez was optioned to Triple-A Las Vegas to open up an extra active roster spot. Left-hander Ben Bowden has been transferred to the 60-day injured list to open a 40-man spot for McGough.

McGough, 35, signed a minor league deal with the A’s in June after being cut loose by the Diamondbacks. Since signing that pact, he has tossed 24 Triple-A innings with a 3.38 earned run average. His 18.4% strikeout rate in that time wasn’t great but his 7.8% walk rate and 48.6% ground ball rate were solid figures.

After a solid run in Japan from 2019 to 2022, McGough returned to North America by signing with the Diamondbacks for 2023. He gave Arizona 70 1/3 innings with a 4.73 ERA, 28.6% strikeout rate, 10% walk rate and 48.6% ground ball rate that year. His results have backed up since then, however. Between last year and this year, he tossed 39 2/3 innings with a 7.26 ERA, 16.2% strikeout rate, 14.6% walk rate and 38.9% ground ball rate. He has seemingly righted the ship somewhat lately, so the A’s will bring him back to the majors.

As for Bowden, he was placed on the 15-day IL just over a week ago due to a lat strain. His current health status is unclear but this move indicates the A’s don’t expect him back this season. He’ll stay on the 60-day IL for the remainder of the campaign. There’s no IL in the offseason, so he’ll need to be reinstated or removed from the 40-man within five days of the conclusion of the World Series.

Photo courtesy of Matt Kartozian, Imagn Images

A’s Release Luis Urias

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The Athletics released infielder Luis Urías, according to the MLB.com transaction log. He’d been designated for assignment on Monday. Urías has sufficient service time to refuse a minor league assignment while collecting what remains of his $1.1MM salary, so a release was inevitable. The A’s preferred to give playing time to controllable infielders Zack Gelof, Darell Hernaiz and Brett Harris for the stretch run.

The 28-year-old Urías can now set out in search of a new opportunity. He’d need to sign somewhere by September 1, at least on a minor league deal, to be eligible for a postseason roster. Urías will be a free agent at the beginning of the offseason in either case, so he’ll presumably only draw interest from a contender that wants to strengthen its infield depth.

Urías got out to a decent start to the season. He hit four homers with a .245/.345/.490 showing through the end of April. He has an underwhelming .227/.309/.307 slash in 271 plate appearances since the beginning of May. Urías has sliced his strikeout rate to a career-low 13.6% clip, but he hasn’t been much more productive overall than he was between 2023-24. He rarely makes hard contact and hasn’t hit for much power since combining for 39 homers with the Brewers from 2021-22.

Defensive metrics grade Urías around league average at both second and third base. He’s a righty hitter who has generally been better against left-handed pitching, as one would expect. That hasn’t been the case this season, as he’s hitting .183 with one homer in 68 plate appearances with the platoon advantage. If he catches on with another team before year’s end, his signing club would pay him the prorated $760K league minimum.

Athletics Select Mason Barnett

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The Athletics announced that left-hander Jacob Lopez has been placed on the 15-day injured list due to a flexor strain in his left elbow, a move that was reported yesterday. Right-hander Mason Barnett has been selected in a corresponding move. The 40-man roster had a vacancy due to Luis Urías being designated for assignment earlier this week.

Barnett, 24, gets the call to the big leagues for the first time. A third-round pick of the Royals in 2022, he was one of three players who came to the A’s as part of last year’s deadline deal which sent Lucas Erceg to Kansas City.

The A’s have given Barnett his first taste of the Triple-A level this year, though the results haven’t been amazing. He has tossed 119 innings over 23 starts and two long relief appearances with a 6.13 earned run average. Part of that might be the hitter-friendly environment of the Pacific Coast League, as his 15.6% home run to fly ball rate is far higher than any other stop in his career. His 22.8% strikeout rate is close to average, though his 11.9% walk rate is a few ticks north of par.

Despite the uninspiring numbers, Baseball America still lists him as the #9 prospect in the system while MLB Pipeline has him in the #11 slot. Both outlets give him a shot at becoming a mid-rotation starter at some point, highlighting his pitch mix. His four-seamer sits in the mid-90s and he also throws a sweeper, curveball and changeup. He was going to be eligible for the Rule 5 draft this winter and would need a 40-man spot to be protected, so the A’s are giving it to him now.

It’s unclear if the A’s plan on dropping Barnett right into the rotation or perhaps having him begin his career in a long relief role. The Lopez injury does open up a rotation job but the club is off on Thursday and doesn’t play more than six games in a row for the rest of the season. They could run with a four-man rotation of Jeffrey Springs, J.T. Ginn, Osvaldo Bido and Luis Morales along with occasional bullpen games. Guys like Barnett, Joey Estes and Eduarniel Núñez could take on bulk roles. The A’s could also recall arms such as Ken Waldichuk or Mitch Spence with rosters expanding in September.

Photo courtesy of Rick Scuteri, Imagn Images

A’s To Place Jacob Lopez On Injured List With Flexor Strain

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A’s starter Jacob Lopez has been shut down after sustaining a Grade 1 flexor strain, manager Mark Kotsay tells reporters (including Martín Gallegos of MLB.com). He’ll go on the 15-day injured list tomorrow. Kotsay said the A’s still hope Lopez can make it back this season, likely as a reliever in the final few days.

Lopez has quietly been one of the American League’s best rookie pitchers. Acquired from the Rays alongside Jeffrey Springs in a deal sending Joe Boyle to Tampa Bay, Lopez was on and off the active roster early in the season. The 6’4″ southpaw has grabbed a firm hold on a big league roster spot since late May. He fired seven innings of one-run ball against the Phillies in his first start after being recalled and has occupied a rotation spot since then. Lopez has had a few blow-up outings but has shown glimpses of dominance, including five scoreless starts over the course of the year.

Four of those came consecutively between July 26 and August 12. He had the two best performances by an A’s pitcher all season in back-to-back outings earlier in the month. Lopez punched out 10 over 7 2/3 scoreless innings in Washington on August 7, then blanked the Rays on nine strikeouts over seven frames five days later. He tossed another quality start — six innings of three-run ball with eight strikeouts in Minnesota — last Tuesday.

Lopez had by far his worst outing of the season yesterday. He walked six and gave up nine runs in two innings in Seattle. The A’s revealed postgame that he’d been dealing with forearm tightness that initially cropped up during his start against the Twins. Yesterday’s appearance pushed his season earned run average to 4.08, but he’d entered the game with a 3.28 mark while striking out 29% of batters faced. That’s excellent production anywhere and especially impressive considering the A’s temporary home field in Sacramento has been the most difficult park for pitchers outside of Coors Field.

The 27-year-old Lopez is arguably the A’s most promising pitcher going into next season. Highly-touted prospect Luis Morales is in the big league rotation now as well. Morales has erratic command but power stuff headlined by a 97 MPH heater. J.T. Ginn has posted better than average strikeout and ground-ball numbers over 60 MLB frames, though it hasn’t translated to great results. Springs and Luis Severino are each signed for next year and will probably be in trade rumors in the offseason.

Osvaldo Bido is listed as the probable starter for tomorrow night’s game against the Tigers. It’ll be his first start since mid-May. Bido has been working 3-4 inning stints out of the bullpen and could take a few turns through the rotation in Lopez’s absence. He owns a 5.37 ERA in 65 1/3 frames over 19 appearances.

Athletics Designate Luis Urías For Assignment

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The Athletics announced today that second baseman Zack Gelof has been recalled from Triple-A Las Vegas. Fellow infielder Luis Urías has been designated for assignment as the corresponding move.

Urías, 28, signed with the A’s in the offseason. The one-year deal guaranteed him $1.1MM, with some bonuses based on plate appearances also in the deal. There was a time where it looked like that deal was going to work out quite well for the A’s. Urías hit .245/.345/.490 through the end of April, with that line translating to a 127 wRC+. In May, his production dropped a bit but was still passable. He still had a decent .244/.333/.407 line and 105 wRC+ by the start of June.

Unfortunately, things have soured from there. Since the end of May, Urías has a .217/.298/.276 line and 63 wRC+ in 171 plate appearances. With Urías an impending free agent and the A’s out of contention, he was a logical trade candidate. However, that dip in performance presumably tanked his trade value, as the A’s didn’t end up flipping him anywhere. A stint on the injured list in July for a right hamstring strain presumably didn’t help.

As Urías has been slumping, Gelof has been getting back on track in Triple-A. His 2025 season was initially thrown off course by injuries. He started the season on the IL due to hamate surgery. While trying to work his way back from that, he suffered a stress reaction in his ribs. He was reinstated from the IL in July but then hit .080/.143/.080 in eight games, at which point the A’s optioned him down to Vegas.

Since getting optioned, he has stepped to the plate 155 times for the Aviators. He has hit 11 home runs and drawn a walk in 11.6% of his plate appearances. His 27.7% strikeout rate is still high but something of an improvement for him. He has a 32.3% strikeout rate in his big league career. Even in Triple-A from 2022 to 2024, his 28.1% strikeout rate was a bit higher than what he’s done lately.

The A’s are 10.5 games back of a playoff spot, so they are in a spot where it makes sense to prioritize the future over the present. Urías was a few weeks away from returning to free agency, so he doesn’t do anything for them down the line. Gelof, on the other hand, could still be a part of the club’s future. He has just over two years of big league service time, meaning he hasn’t yet qualified for arbitration. He can be retained for four more years after this one. He will also still has two more option years after 2025, so future optional assignments could even extend the club’s window of control.

For now, it makes sense to give the second base job to Gelof. He has shown some good pop in his time, with 31 home runs in 875 big league plate appearances. He’ll need to cut down on the strikeouts but regular playing time could help with that. The A’s can give him the final few weeks of the season to see how he handles it. His performance in that stretch could determine if they look for external additions in the offseason or plan on Gelof being their second baseman in 2026.

Since the trade deadline has passed, Urías will be available on waivers in the coming days. There’s still about $200K left on his deal and he hasn’t been playing well lately, so it’s unlikely any club would claim him. If he if passed through waivers unclaimed, he has enough service time to reject an outright assignment and elect free agency. The A’s might skip that formality and simply release him.

Photo courtesy of David Richard, Imagn Images

A’s Activate Jacob Wilson From Injured List

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Jacob Wilson returns to action nearly a month after suffering a forearm fracture. The A’s activated the rookie shortstop from the 10-day injured list. He’s hitting fifth against Seattle starter Bryan Woo. The A’s optioned Max Schuemann to Triple-A Las Vegas in a corresponding move. They also made a couple changes on the pitching staff. Eduarniel Núñez and Joey Estes are up from Triple-A as Ben Bowden (lat strain) and Jack Perkins (shoulder strain) land on the 15-day injured list.

Wilson’s return is the most significant of those moves. The 2023 sixth overall pick had an outstanding first half. He’s hitting .312/.354/.439 with 10 longballs and 17 doubles. Wilson had struggled a bit in July but hit .323 or better in each of the season’s first three months. His return won’t mean much in the standings with the A’s sitting 11 games below .500, but they’re obviously a much better team when he’s in the lineup.

At the time of his injury, Wilson was the frontrunner for American League Rookie of the Year. Teammate Nick Kurtz has mashed his way to that spot and probably has the award all but secure at this point. Wilson still easily leads MLB rookies with 115 hits. He has a shot to finish in second for the award, though Boston’s Roman Anthony and the Yankees’ Will Warren are among those who also have reasonable arguments for that spot.

Anthony would earn a full year of service if he manages a top two finish. While he already signed a long-term extension with the Red Sox, that’d be important for his earning power considering his deal has significant escalators dependent on his Rookie of the Year placement. The ROY finish is less meaningful for Wilson. He has been on the MLB roster since Opening Day and will get a full service year either way. He cannot earn the A’s an extra draft choice by winning the award, however, because he entered this year with more than 60 days of service. Wilson spent five weeks on the MLB injured list late last season with a hamstring strain, which is why he had that much service time while remaining Rookie of the Year eligible.

Darell Hernaiz was called up when Wilson went on the shelf. The 24-year-old has turned in a solid .261/.337/.420 slash in 20 games. That’s enough to hold his roster spot. Hernaiz had played shortstop while Wilson was down but moves to second base tonight. He’ll probably get everyday run there, kicking impending free agent Luis Urías to the bench.

Athletics Release Gio Urshela

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The A’s have released veteran infielder Gio Urshela, whom they designated for assignment on Friday, per the transaction log at MLB.com. He’ll be able to sign with any team once he clears release waivers.

Urshela, 33, signed a one-year, $2.15MM contract in free agency this past offseason. He missed close to a month earlier this season due to a hamstring strain and struggled at the plate both before and after that IL stint. He batted .238/.287/.326 with no home runs, 14 doubles and a triple in 197 turns at the plate. His 20.3% strikeout rate was his highest (by a wide margin) since 2021.

It’s been a tough few years for Urshela, who experienced an out-of-the-blue breakout with the Yankees in his age-27 season back in 2019 and played well up through a strong 2022 showing with the Twins. For four seasons between the Bronx and Minneapolis, he posted a combined .290/.336/.463 batting line (118 wRC+) with 54 home runs, 90 doubles and five triples in 1643 plate appearances.

Urshela was traded from the Twins to the Angels following the 2022 season. He suffered a fractured pelvis a couple months into his Angels tenure, and he hasn’t looked the same since. While he was batting .299/.329/.374 at the time of the injury, he’s taken 658 major league plate appearances between the Tigers, Braves and A’s since returning and has mustered only a .246/.287/.351 slash (77 wRC+). His defensive grades at the hot corner have seen a downturn as well — particularly in 2025. Both Defensive Runs Saved (-6) and Outs Above Average (-2) feel he’s been well below average in just 421 innings of work.

Once Urshela clears release waivers, any team that signs him would only need to pay him the prorated league minimum for any time spent on the big league roster. That sum would be subtracted from what the A’s owe him, but they’ll remain on the hook for the vast majority of what’s left on this year’s salary.

Athletics Designate Gio Urshela For Assignment, Claim Jared Shuster

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The Athletics announced that they have claimed left-hander Jared Shuster off waivers from the White Sox and sent him to Triple-A Las Vegas.. The latter club designated him for assignment earlier this week. To open a 40-man spot, the A’s designated infielder Gio Urshela for assignment. Infielder Brett Harris has been recalled to take Urshela’s active roster spot.

Shuster, 27, was once a notable prospect in Atlanta’s system. He hasn’t yet delivered at the major league level, with a 5.27 earned run average in 141 2/3 innings. His minor league track record has been better overall but has been trending in the wrong direction lately. He tossed 212 1/3 minor league innings over 2021 and 2022 with a 3.69 ERA, 27.4% strikeout rate and 6.8% walk rate. But since then, he has 114 innings with a 5.37 ERA, 18.1% strikeout rate and 10.6% walk rate.

For the A’s, it’s understandable they’d grab him off waivers. They’re out of contention here in 2025 and can prioritize the long term. Shuster is in his final option year. He’ll be out of options next year but he can be stashed in Triple-A for now. The A’s can get a close-up look at him and see if he can get back on track in the next few weeks. If not, they can perhaps run him through waivers in the offseason and keep him as non-roster depth next year.

One way or another, if he clicks while in the system, there would be long-term benefits. He has just over two years of service time, meaning he hasn’t yet qualified for arbitration and could theoretically be controlled for four seasons after this one.

Urshela, on the other hand, doesn’t have any long-term benefit to the A’s. His 34th birthday is just over the horizon. He was signed in the offseason to a one-year deal with a $2.15MM guarantee to provide a stable veteran presence in an infield with a lot of youth and uncertainty. Unfortunately, he has hit just .238/.287/.326 this season. His wRC+ has dropped for a third consecutive year and is now down to 68. His previously-excellent defensive metrics have slid below the mean.

By claiming Shuster and bumping out Urshela, the A’s add a younger pitcher who could potentially help them in the future. Meanwhile, Urshela’s playing time at third base can go to younger guys like Harris or Max Schuemann.

With the trade deadline having passed, Urshela will end up on waivers in the coming days. Given his performance this year and his salary, he’s sure to clear. He has enough service time to reject an outright assignment and elect free agency while still collecting the remainder of that salary. The A’s might skip that formality and release him. Once on the open market, they will still be on the hook for that money. If Urshela ends up on another big league roster, the signing club would only owe him the prorated portion of the league minimum salary for any time spent on the roster, with that amount subtracted from what the A’s pay.

Photo courtesy of Daniel Kucin Jr., Imagn Images

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