Astros Recall Miguel Ullola For MLB Debut
TODAY: The Astros announced Ullola’s promotion prior to today’s game, and Teng was optioned to Triple-A.
JUNE 27: Right-hander Miguel Ullola is getting his first look in the majors. The Astros are recalling the pitching prospect for his big-league debut, reports Chandler Rome of The Athletic.
Ullola was added to the 40-man roster in November to protect him from the Rule 5 draft, so no move is needed there. A 26-man roster change will be required, and Rome adds that right-hander Kai-Wei Teng is likely involved. Teng failed to make it out of the fourth inning against the Tigers today. He was charged with four earned runs on eight hits. The righty is one of just a few Houston arms with minor league options remaining (and the realistic possibility of being demoted).
After bouncing between the rotation and the bullpen, Ullola was moved to a full-time relief role earlier this season. Persistent control issues led the Astros to make that decision. Ullola has posted a walk rate above 13% at every minor league stop, including a 16.4% mark at Triple-A this year. He hasn’t curtailed the free passes since moving to the bullpen, walking six in 10 innings.
The 24-year-old Ullola has shown considerable strikeout ability at each level with an expansive five-pitch arsenal. He’s punched out minor league opponents at a 30% clip across 47 2/3 innings this year. Ullola sits in the mid-90s with the fastball, which he’s thrown about half the time with Sugar Land. He’s only used the changeup on 5.7% of his offerings, but he’s thrown the slider, cutter, and curveball at least 10% of the time.
Unsurprisingly, Ullola has trimmed his arsenal since moving to the bullpen. He’s leaned on the four-seamer, which has averaged 96 mph since the role change. Ullola has mixed in the slider and cutter, while largely ditching the curveball and changeup.
If Teng does get sent down, the Astros are likely headed back to a traditional five-man rotation. After Mike Burrows was briefly bumped to the bullpen, he returned to the rotation, which meant Houston briefly transitioned to a six-man look. Part of the shuffling had to do with reincorporating ace Hunter Brown, who returned in mid-June after missing more than two months with a shoulder injury. Teng showed flashes in a multi-faceted role, particularly in terms of strikeouts, but struggled with efficiency after becoming a starter.
Photo courtesy of Reinhold Matay, Imagn Images
Astros Notes: Brown, Allen, Ullola
Hunter Brown will make his fourth and possibly final minor league rehab start on Wednesday, Astros manager Joe Espada told the Houston Chronicle’s Matt Kawahara and other reporters yesterday. Brown will pitch for Triple-A Sugar Land for the third time during his rehab assignment, with the first of his four outings coming with Double-A Corpus Christi on May 24.
As expected, Brown’s pitch count has slowly increased with each start, going from 35 to 44 to 57. Espada had previously hinted that the Astros could activate Brown after just three rehab outings, though an earlier return probably would’ve required the use of a piggyback pitcher behind Brown if he was limited to something in the realm of 70 pitches. As such, the right-hander will get a bit more time to fully build his arm strength before returning from the 60-day injured list.
Brown emerged as the ace of Houston’s rotation in 2025 and hit the ground running this year with an 0.84 ERA over his first two starts. A Grade 2 shoulder strain then sent Brown to the IL in one of the first of what has been many major injury blows to the Astros roster. Brown is one of seven pitchers and 10 overall players still on Houston’s injured list, so it isn’t any surprise that the Astros have a 30-37 record.
That said, the Astros have gone 13-9 in their last 22 games, as the team has gotten a little healthier. Yordan Alvarez‘s MVP-level numbers have helped carry the lineup, while Spencer Arrighetti, Peter Lambert, and Kai-Wei Teng have all pitched well in filling in the many holes in the rotation. An in-form Brown returning to the top of that rotation would be another major boost to the Astros’ chances of digging themselves out of their early-season hole.
Just as Brown is getting nearer a return, however, yet another player is facing an injury scare. Nick Allen made an early exit from today’s 5-0 loss to the Athletics due to left hamstring discomfort, which arose after the infielder singled in the third inning. “I was trying to leg out a double there and kind of felt something grab on me, a little bit on the left hammy, lower left side,” Allen told MLB.com’s Brian McTaggart and other reporters.
Allen said he’ll undergo testing to determine the extent of the injury but downplayed the seriousness of the discomfort. The backup infielder already missed a couple of weeks earlier this year dealing with back spasms, but Allen has already played in 37 games this season, as the Astros’ various injuries opened the door for playing time at second base, third base, and shortstop. Allen is providing his usual light offense (.266/.304/.344 in 70 plate appearances) and his glovework isn’t quite up to its usual stellar standard, but Allen has been a useful depth piece for the shorthanded roster.
In another piece from McTaggart, he notes that the Astros have transitioned pitching prospect Miguel Ullola into a full-time relief role. Ullola is a classic case of a pitcher with great stuff that he hasn’t been able to harness — over 471 2/3 career innings in the minors, Ullola has an impressive 30.54% strikeout rate but also a 15.75% walk rate, resulting in an uninspiring 4.45 ERA.
Ullola doesn’t turn 24 until later this month so it is possible he might get another look as a starter down the road. But after six seasons of inconsistency, “you start narrowing it down when they get to Triple-A,” Espada said. “He’s started [86] games already, so now we start getting a better feel for what he’s going to be and how can impact our roster.”
Houston added Ullola to the 40-man roster last November to protect him from the Rule 5 Draft, and the move to the bullpen might be the final step in getting the right-hander to the majors. Ullola was charged with three runs over two-third of an inning today, but he hadn’t allowed a run in his previous five relief innings. As usual, switching to relief pitching has delivered a velocity bump, as Ullola’s already plus fastball has touched 97.3mph since going to the pen.
Astros Designate Ramon Urias For Assignment
The Astros announced they’ve designated infielder Ramón Urías for assignment. His spot on the 40-man roster goes to pitching prospect Miguel Ullola, who has been selected to keep him out of the Rule 5 draft. Their roster remains at capacity.
Houston acquired Urías from the Orioles at this past summer’s trade deadline. It initially seemed he’d be the fill-in third baseman after the Isaac Paredes injury. The Astros pulled off the shocking Carlos Correa deal a day later, pushing Urías into more of a second/third base hybrid role. He didn’t perform especially well. He hit .223/.267/.372 with 28 strikeouts in 101 trips to the plate after the trade.
That will end up being his only work in an Astros uniform. MLBTR contributor Matt Swartz projected Urías for a $4.4MM salary in his final year of arbitration. Houston wasn’t going to pay that amount coming off the rough finish. They can technically spend the next three days trying to find a trade partner, but it’s likelier they’ll simply non-tender him on Friday. He’d become a free agent at that point.
While his Astros tenure was a disappointment, Urías had been a capable role player for the Orioles for the past few seasons. He won a Gold Glove at third base in 2022, though his defensive grades in every other season have been right around average. Urías was also essentially an average hitter throughout his time in Baltimore. He batted .259/.324/.404 in a little more than 500 games over parts of six seasons with the Orioles. He’s been serviceable against pitchers of either handedness and can play any non-shortstop position on the dirt.
Urías should be able to command a major league contract if he’s non-tendered. It’d surely be a one-year deal but he could find a $3-4MM guarantee to work as a right-handed infielder off the bench. Houston will ideally find a lefty bat to fit that role, as their lineup already skews very heavily to the right side. They’ll need to decide whether to tender righty-hitting utilityman Mauricio Dubón (projected at $5.8MM) or start from scratch with their infield depth.
Ullola appears to be the only prospect whom the Astros were concerned would get taken in next month’s Rule 5 draft. The 23-year-old righty spent the entire ’25 season working out of the Triple-A rotation. He managed a solid 3.88 earned run average across 113 2/3 innings in the Pacific Coast League. Ullola fanned 27% of opponents but walked nearly 16% of batters faced. He has never thrown strikes at a tenable rate in the minors, which presumably points toward a long-term bullpen future. Ullola’s fastball sits around 94 MPH in his work as a starter, so he could be a solid power arm with significant bat-missing upside if the Astros move him to relief.