Diamondbacks Claim Nate Adcock
The Diamondbacks announced that they have claimed right-handed pitcher Nate Adcock off of waivers from the Royals. Adcock has been optioned to Triple-A Reno.
Adcock was designated for assignment by the Royals last week. The 6-foot-4, 230-pounder posted a 3.79 ERA with 5.5 K/9 and 3.7 BB/9 in 31 relief appearances and five starts from 2011-12. However, he hasn't found the same level of success in parts of two seasons at the Triple-A level, as evidenced by his 6.03 ERA with 5.4 K/9 and 3.3 BB/9 in 27 starts and two relief outings. Arizona's 40-man roster is now at 40.
Quick Hits: Zunino, Tigers, Ishikawa, Astros
The Mariners' promotion of Mike Zunino will give the club some 40-man roster issues down the line, writes Dave Cameron of U.S.S. Mariner. While none of the players on the chopping block for future roster shuffling project to be superstars, "the reality is that if you toss a half dozen fringe prospects overboard, you’re going to end up regretting it," Cameron writes. Here's more from around baseball..
- The Tigers have been looking hard for a closer and will continue to do so, tweets Danny Knobler of CBSSports.com. Jose Valverde had a rough outing today versus the Royals as he surrendered a game-tying two run homer in the bottom of the ninth to Lorenzo Cain.
- Travis Ishikawa can opt out of his deal with the Orioles soon and Dan Duquette wouldn't be surprised if he lands a big league job, tweets Roch Kubatko of MASNsports.com. Tim Dierkes first learned that the first baseman can opt out of his minor league deal on Saturday.
- Michael Foltynewicz is evolving into the Astros' best pitching prospect, writes Brian T. Smith of the Houston Chronicle. The No. 19 overall pick in the 2010 draft entered the season as the No. 5 prospect in the club’s farm system, according to Baseball America, and he has only added to his buzz since then.
- The Angels considered drafting former Florida football star Tim Tebow years ago but he had to be scrubbed from the draft board when he didn't send a completed information card to them, writes Alex Speier of WEEI.com.
- It's too early to determine who will and won't be available at the trade deadline this year, opines Ken Davidoff of the New York Post.
Draft Signings: Ledbetter, Rhame, Westbrook
Here's a look at the latest notable draft signings from Day 2 and Day 3..
- The Mariners inked sixth-rounder Corey Simpson to an above-slot $400K deal (suggested value: $245K), Callis tweets. The Texas high school catcher/first baseman possesses massive power and a strong arm.
- The Rangers signed third-round right hander David Ledbetter, tweets Evan Grant of the Dallas Morning News. Ledbetter's deal comes with a $350K bonus, less than the slot amount of about $521K, tweets Anthony Andro of FOXSportsSouthwest.com.
- Dodgers sixth-round pick Jacob Rhame agreed to a deal worth $300K, according to Jim Callis of Baseball America (on Twitter). The right-hander, who boasts a solid sinker, got about $70K more than the suggested value for his slot, per BA's rundown.
- The Diamondbacks went well above slot to sign shortstop Jamie Westbrook, according to Callis (on Twitter). The fifth-rounder got $450K, more than the suggested $318K for his draft position.
- One of the fastest players in the draft didn't waste much time in putting his name on the dotted line. The White Sox inked third-round pick Jacob May to a $525K deal, tweets Callis.
- Orioles 16th round pick Randolph Gassaway agreed to sign, Callis tweets. The high school first baseman will get a bonus of $100K.
- Outfielder Charcer Burks signed for $170K with the Cubs, tweets Callis. That's slightly more than the suggested ~$149K for where he was taken in the ninth round.
Rockies Sign Jonathan Gray
The Rockies signed first-round pick Jonathan Gray to a $4.8MM deal, tweets Jim Callis of Baseball America. The right-hander's deal is about $826K less than the suggested slot value for the No. 3 overall pick, according to BA's list of the assigned pick values for the first ten rounds. 
He is advised by BBI Sports Group.
Gray, who comes out of Oklahoma University's program was the top-ranked talent in the draft according to Baseball America, second according to MLB.com's Jonathan Mayo and third according to ESPN's Keith Law. Gray was widely projected as either the No. 1 or No. 2 pick in the draft but fell to third when the Cubs threw everyone a minor curveball and drafted Kris Bryant.
The 6'4", 245-pounder spent the season as the Sooners' Friday starter, flashing a fastball that hit triple digits and showing the ability to maintain that velocity deep into his outings. His slider is considered by BA, Mayo and Law to be a plus pitch as well.
Gray was the source of some minor controversy just days before the draft when it was reported that he tested positive for Adderall. There was some speculation at the time that the failed test could cause his bonus demands to drop, though it's not clear if that test is the reason he signed an under-slot deal. Cubs scouting director Jason McLeod said after the draft that the test didn't play a role in their decision to select Bryant over Gray. With this agreement, Gray becomes the 10th first-round selection from this year's draft class to sign.
Troy Renck of the Denver Post (Twitter links) reported earlier today that Gray was nearing agreement on a deal with Colorado.
Steve Adams contributed to this post. Photo courtesy of USA Today Sports Images.
Rockies Designate Eric Young Jr. For Assignment
The Rockies have designated Eric Young Jr. for assignment, according to Troy Renck of the Denver Post (on Twitter). The move will allow the Rockies to activate right-hander Chris Volstad.
The outfielder posted a .316/.377/.448 slash line in 196 plate appearances last year but hasn't found the same success in 2013. In 180 PAs this year, the 28-year-old has hit .242/.290/.352 with one homer. Young has experience at all three outfield positions as well as 49 games at second base.
Rays Sign Riley Unroe
6:29pm: The deal will be above-slot, MLBTR's Tim Dierkes has learned.
5:53pm: The Rays have signed second-rounder Riley Unroe, tweets Roger Mooney of the Tampa Tribune. Terms of the deal are unknown but the suggested slot value for the No. 60 pick is just under $928K. Unroe is advised by Jason St. Clair of Lagardere.
The high school shortstop committed to USC but will instead begin his professional career with the Tampa Bay organization. Baseball America had Unroe ranked as the 53rd best prospect in the draft while Keith Law of ESPN and Jonathan Mayo of MLB.com had him ranked at No. 90 and 92, respectively.
In their profile of Unroe, BA estimated that it would take a seven-figure bonus to pry him away from the Trojans and a deal that meets the suggested value of his pick will put him right on the doorstep of that.
Mariners Sign D.J. Peterson
The Mariners and first round pick D.J. Peterson have reached agreement on a deal, sources tell Larry Stone of the Seattle Times (on Twitter). Peterson, who is being advised by Excel Sports Management, will get $2.759MM, according to Jim Callis of Baseball America (via Twitter). 
That amount matches the suggested value for the No. 12 pick.
The M's previously drafted the third baseman in the 33rd round of the 2010 draft but couldn't come to terms with him on a contract. Seattle reportedly gave him a very generous offer to sign at the time, but it cost them considerably more this time around.
Peterson played a good amount of first base this season out of necessity for New Mexico but was adamant in a conference call with reporters, including Stone, that he wants to remain at third base. The youngster says that his improved range should help him stick in the hot corner.
The third baseman was ranked No. 11 in this year's class by Jonathan Mayo of MLB.com and No. 12 on BA's top 500. Keith Law of ESPN.com had him ranked No. 34 on his top 100 list.
Photo courtesy of the University of New Mexico communications department.
White Sox Sign First-Rounder Tim Anderson
The White Sox have signed first round pick Tim Anderson to a deal worth $2.164MM, according to Jim Callis of Baseball America (on Twitter). The shortstop out of East Central Community College in Dectaur, Mississippi is advised by Reynolds Sports Management.
Anderson ranked 25th among draft prospects according to MLB.com's Jonathan Mayo. Baseball America ranked him as the draft's No. 26 prospect, while ESPN's Keith Law ranked him 37th. His $2.164MM deal matches the exact slot recommendation for the No. 17 pick.
Mayo writes that Anderson's speed is his best asset, noting that he should be a base-stealing threat with occasional power to his pull side. All three evaluations feel he has a chance to stick at short, though BA notes that average arm strength could force him to move.
Anderson is the sixth first-rounder from this year's draft to sign with his team. Mark Gonzales of the Chicago Tribune first reported that the two sides were nearing an agreement.
Steve Adams contributed to this post.
Cubs Acquire Henry Rodriguez
The Nationals announced that they have traded Henry Rodriguez to the Cubs in exchange for fellow right-hander Ian Dickson. The Nats designated Rodriguez for assignment last week in order to make room on the roster for Anthony Rendon.
Rodriguez, 26, has a 4.23 ERA with 9.3 K/9 and 6.1 BB/9 across parts of five big league seasons with the A's and Nats. He pitched 18 innings in relief for Washington this season, posting a 4.00 ERA with eleven strikeouts and 16 walks. While he has yet to find sustained success in the big leagues, Rodriguez has impressed with a 100 mph fastball in recent outings.
Dickson, 22, was taken in the 35th round of the 2011 draft by the Cubs. The youngster has a 6.88 ERA with 8.2 K/9 and 3.8 BB/9 in three starts and eight relief appearances for Chicago's Single-A affiliate this year.
Quick Hits: Sizemore, Mets, Zunino
While major league players implicated in the Biogenesis scandal have yet to provide substantive information to MLB, multiple minor leaguers have discussed their transactions with Anthony Bosch's clinic in detail, sources with knowledge of the interviews told Jeff Passan of Yahoo Sports. "Players aren't going to say anything – until they know what [Bosch] said," one source with knowledge of the players' plan said. "There's nothing to be gained from talking now. As long as they don't say anything, they're not lying." Here's more from around baseball..
- Free agent Grady Sizemore is still "a ways away from getting on the field," a source tells Darren Wolfson of 1500 ESPN (on Twitter). We heard last week that there's a "strong belief" that the Twins will have interest in the outfielder when he's ready to return to action.
- Mets GM Sandy Alderson believes that the club will have a $90-100MM payroll in 2014, writes Joel Sherman of the New York Post. Alderson estimates that they have roughly $55MM in commitments for next season, which should give them flexibility over the winter.
- Mariners GM Jack Zduriencik did his best to downplay the hype surrounding Mike Zunino when he spoke with reporters earlier today, writes Ryan Divish of The News Tribune.