Here is the latest on injuries and roster moves involving MLB Pipeline's Top 100 prospects:
LATEST NEWS
No. 9 Sebastian Walcott, SS/3B, Rangers
Injury: Concussion protocol
The Rangers' No. 1 prospect returned to the Double-A Frisco lineup as the designated hitter on Aug. 12, and picked up a double, a single, a walk and a couple of runs scored. Walcott went on the 7-day injured list on Aug. 2 after being hit in the eye on a pickoff attempt during the previous night's game. Before that, he had made a strong return from UCL surgery, hitting .308/.357/.577 with 13 runs scored, nine RBIs, three stolen bases and a .934 OPS in his first 13 games of the season with the RoughRiders. (Last updated: Aug. 12)
TOP 100 PROSPECT NEWS
(ordered by ranking)
No. 7 Seth Hernandez, RHP, Pirates
Injury: Left oblique strain
Expected return: 2027
Hernandez is expected to miss the remainder of his debut campaign after he landed on the injured list due to a left oblique strain he sustained in his July 24 start for High-A Greensboro. At the time of his injury, the 20-year-old ranked fourth in the Minors in strikeouts (118) and second in strikeout rate (40.4 percent) and posted a 2.43 ERA across 74 innings between two levels of A-ball. More » (Last updated: July 29)
No. 25 Ethan Holliday, SS, Rockies
Injury: Stress fracture in left foot
Expected return: 2027
Holliday will undergo surgery for a stress fracture in his left foot and miss the remainder of the season, a source told MLB.com's Thomas Harding on May 29. Holliday, 19, batted .262 with nine home runs and 32 RBIs over 33 games in his first full professional season, but the No. 4 pick from the 2025 Draft had been red-hot during the month of May, producing a 1.083 OPS with 11 extra-base hits and 17 RBIs in 15 games. It wasn't clear when or how the injury occurred. More » (Last updated: May 29)
No. 36 Christian Zazueta, RHP, Dodgers
Status: Placed on Developmental List
Expected to return: TBD
Zazueta went on Double-A Tulsa's Developmental List in an effort to manage his workload during his breakout season. The 21-year-old has thrown a career-high 78 2/3 innings between High-A and Double-A after averaging 53 innings in his first four pro seasons. The 6-foot-3 righty has 113 strikeouts to just 15 walks this season and has given up one or fewer in eight of his 10 starts since the calendar turned to June. (Last updated: Aug. 9)
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No. 37 Thomas White, LHP, Marlins
Injury: Left shoulder capsular sprain
Expected return: Mid-August to September
The 21-year-old landed on the Minor League IL back on May 20, before it was revealed he'd be down for the next 12-to-16 weeks due to a left shoulder capsular sprain. White had the start of his season delayed due to an oblique strain, before returning to strike out 35 batters in 24 2/3 frames across two levels. (Last updated: June 5)
No. 52 Travis Sykora, RHP, Nationals
Injury: Torn UCL
Expected return: Potentially late 2026
After an MRI unveiled a torn UCL, the right-hander underwent UCL reconstruction last August. The 21-year-old had been one of the Minor Leagues' most dominant pitchers last season, registering a 1.79 ERA across 12 starts while reaching Double-A. (Last updated: Feb. 26)
No. 53 Robby Snelling, LHP, Marlins
Injury: Left elbow UCL sprain
Expected return: TBD
Snelling will undergo left elbow surgery on May 22. The southpaw landed on the 15-day injured list on May 13, just five days after his Major League debut. Miami manager Clayton McCullough said Snelling reported some discomfort after a May 12 bullpen session. Imaging revealed a UCL sprain in his throwing elbow, and he was moved to the 60-day injured list. The 22-year-old had a 1.86 ERA and 44 strikeouts in 29 innings at Triple-A this season and gave up three runs over five innings in his lone big league outing. (Last updated: May 21)
No. 54 Kendry Chourio, RHP, Royals
Status: Out for workload management
Expected return: TBD
Chourio has not pitched since July 25 and the organization is said to be managing his innings. There is no date for his return. The 18-year-old equaled a career high with six innings for High-A Quad Cities in his previous outing, the fourth time he's pitched that far into a game this season. After tossing 51 1/3 innings in his pro debut last year, Chourio is up to 78 2/3 frames in 2026 -- 57 of those since the beginning of June. The Venezuela native has a 2.06 ERA, an 0.85 WHIP and a 79/14 K/BB ratio across two Minor League levels this season. (Last updated: Aug. 10)
No. 60 Tate Southisene, 2B/SS, Braves
Injury: Right wrist
Expected return: TBD
After receiving his second promotion of the season to Double-A, Southisene was hit by a pitch on his right wrist in his second at-bat during his Columbus debut on July 28 and exited the game the following inning. The Clingstones subsequently put him on the seven-day IL. The 19-year-old infielder stands first in runs (72), second in walks (65) and tied for second in stolen bases (45) in the Braves' system. Southisene hit .279/.408/.469 between Single-A Augusta and High-A Rome this season and is tied for 11th in the Minors in steals. (Last updated: July 29)
No. 61 Aidan Miller, SS, Phillies
Injury: Back discomfort
Expected return: 6-8 weeks
Miller was diagnosed with discogenic pain and facet inflammation in the lumbar spine, and he will undergo a minimally invasive procedure called a radiofrequency ablation of the facet joints. The issue first flared up last year, when Miller missed the final few games of the 2025 Minor League season and was pulled from participating in the Arizona Fall League due to similar discomfort. Back pain returned when he resumed baseball activities in May. He will undergo the procedure on June 5 and rest for one week before returning to his rehab. The goal is for the 21-year-old to return to game activity in six to eight weeks. More » (Last updated: June 3)
No. 66 River Ryan, RHP, Tigers
Injury: Hamstring
Expected return: TBD
The right-hander has been slowed by injuries throughout his pro career, but the setback isn't considered serious. After missing time with a hamstring issue earlier this season, Ryan felt a twinge in his hamstring after his last start on June 17 against Triple-A Sacramento and the club decided to skip his next scheduled start. Rather than skip another turn in the rotation, he was put on the IL. On Aug. 1 he was traded to the Tigers as part of the Tarik Skubal deal, and Detroit optioned him to Triple-A Toledo. (Last updated: Aug. 2)
No. 68 Jarlin Susana, RHP, Nationals
Injury: Lat surgery
Expected return: TBD
Susana has started to throw off the mound at the Nationals Spring Training complex and is on track with his recovery timeline. The 22-year-old underwent lat surgery the week of Sept. 8 last year. He had been limited to 56 1/3 innings in 2025 due to a Grade 1 UCL sprain in his elbow he suffered on May 4, then a right lat injury suffered on Aug. 30, which ended his season. Susana was a non-roster invite to Nationals big league camp this spring, but he did not compete in Grapefruit League action. (Last updated: June 12)
No. 72 Braylon Doughty, RHP, Guardians
Injury: Right arm fatigue
Expected return: TBD
Doughty was scratched from his scheduled start on July 31 for Double-A Akron due to arm fatigue. The 2024 Draft pick, who was promoted to the RubberDucks after earning Midwest League Pitcher of the Month honors in June after posting a 1.64 ERA for High-A Lake County, will undergo testing. Doughty sports a 3.61 ERA, a 1.24 WHIP and a strong 100/17 K/BB ratio in 82 1/3 innings across 19 starts for Lake County and Akron in his second pro season. (Last updated: July 31)