It appears as though top Red Sox pitching prospect Luis Perales has resumed throwing after undergoing Tommy John surgery last summer, based on a video posted to X by his trainer Luis Saborio on Wednesday.
Perales, the No. 5 prospect in Boston’s farm system according to Baseball America, was in the midst of a breakout 2024 season before injuring his pitching elbow last June. The 21-year-old right-hander started somewhat slow out of the gate in April but turned things around by posting a 3.42 ERA (1.92 FIP) with 46 strikeouts to 10 walks in seven starts (26 1/3 innings) for High-A Greenville. He was then rewarded with a promotion to Double-A Portland on May 26.
Just two starts into his first Double-A stint, however, Perales tore the ulnar collateral ligament (UCL) in his right elbow on June 8. He was placed on Portland’s injured list the following day and ultimately underwent season-ending Tommy John surgery — or a full UCL reconstruction — towards the end of the month.
Altogether, Perales forged a 2.94 ERA (1.91 FIP) with 56 strikeouts to 12 walks in nine total outings (33 2/3 innings) between Greenville and Portland last year. Opposing hitters batted .250 against him, though it is worth noting that that figure is tied to an abnormally high .431 batting average on balls in play.
Not including the Dominican Summer League, Perales was one of 67 Red Sox minor-leaguers to pitch at least 33 innings in 2024. Among those 67, the righty ranked first in FIP (1.91) and strikeouts per nine innings (14.97), second in xFIP (2.09), strikeout rate (38.9 percent), and swinging-strike rate (19.6 percent), 10th in ERA and groundball rate (48.6 percent), 19th in walk rate (8.3 percent), 23rd in walks per nine innings (3.21), and 29th in WHIP (1.31), per FanGraphs.
At the time of his injury, Perales had recently entered Baseball America’s Top 100 rankings for the first time and was regarded as the No. 57 prospect in the sport. While he has since dropped from that list, Perales “just missed” being included in BA’s updated Top 100 rankings (which were released on Wednesday) heading into the 2025 campaign.
As highlighted by Baseball America’s Josh Norris, Perales saw his stock rise last season thanks — in part — to an uptick in fastball velocity and a revamped arsenal. To complement his high-octane heater that sat between 95-98 mph and reached 99 mph, the 6-foot-1 hurler mixed in a low-90s cutter, a mid-80s splitter, and a developing mid-80s sweeper.
Perales, who turns 22 in April, originally signed with the Red Sox for $75,000 as an international free agent coming out of Venezuela in July 2019. The Guacara native had to wait nearly two years to make his professional debut due to the COVID-19 pandemic, but he showed enough from there to be added to Boston’s 40-man roster in November 2023 and receive protection from the Rule 5 Draft.
Given the expectation that the Red Sox will exercise caution and patience here, it seems likely that Perales will miss the entire 2025 season while focusing on his rehab. If all goes well, though, he could complete his recovery by the end of the year and put himself in a position to fully ramp up for a return to the mound at some point early on in 2026.
(Picture of Luis Perales: Billie Weiss/Boston Red Sox/Getty Images)
