Luis Perales Prospect Report: Velocity, Arsenal, Stats & 2026 Outlook

Luis Perales, a 23-year-old power pitcher, continues his comeback after undergoing full UCL reconstruction (Tommy John surgery) in June 2024. He briefly returned late last season, throwing just two innings in September before Boston assigned him to the Arizona Fall League. There, Perales made six starts. While his ERA was elevated, the more encouraging sign was the return of his elite velocity—he threw 43 fastballs at 100+ mph.

Perales has been used as a starter with Triple-A Rochester, where he has made 12 starts this season. His year was interrupted on May 17 when a line drive traveling over 100 mph struck his pitching arm. Fortunately, there was no structural damage, but a deep bruise sidelined him for two weeks. He made

eight starts prior to the injury and has since returned to make four more.

Perales features a four-pitch power arsenal and is currently developing a changeup to round it out. His four-seam fastball is considered elite by scouts, averaging 99 mph with significant riding life generating 17 to 20 inches of vertical break due to high spin, making it especially effective at the top of the strike zone.

His secondary pitches include a cutter, slider, and splitter. The cutter, often viewed as his best secondary offering, sits between 88–94 mph with sharp, short horizontal movement. His splitter mirrors the fastball out of his hand before diving late with tumbling action, making it particularly effective against left-handed hitters. He also throws a mid-80s slider that resembles a hard curveball and is effective at generating chase swings out of the zone.

Scouts project Perales as a potential mid-rotation starter if he can refine his command. If not, his high-octane fastball could make him a valuable late-inning reliever. The Nationals’ emphasis on player development under Mike Rizzo and Eddie Longosz, along with Rochester’s expanded pitching staff—now featuring both Fernando Nieve and Sam Narron should benefit Perales as he continues to develop.

Rochester has taken a cautious approach with Perales this season, limiting him to shorter outings early on as he built back from surgery. In April, he typically threw between two to four innings per start as the organization gradually stretched him out. That patience began to pay off prior to his injury.

In the three starts leading up to May 17, Perales showed significant progress. After allowing a solo run in each of the first three innings against Syracuse, he settled in to finish with two scoreless frames. He followed that outing with 5.0 and 4.2 scoreless innings in his next two starts. In his final start before the injury against Lehigh Valley, he was dominant—throwing a shutout, allowing just four hits with no walks. He was one out away from earning the win before being struck by the line drive. Across those three outings, Perales posted a 1.84 ERA and an impressive 0.95 WHIP.

Perales returned to the mound just under three weeks later and has since made four starts. In his most recent outing against Charlotte, he earned his second win, pitching 5.1 innings. His first two starts back were shorter, at 3.1 and 3.2 innings, as Rochester continues to carefully build up his workload.

Since returning, Perales has struggled with command and consistency. Over 16.2 innings, he has allowed nine earned runs on 18 hits, walking nine and striking out 13. His ERA during this stretch sits at 7.56 with a 1.50 WHIP. He has also surrendered four home runs in his last three starts, allowing 13 runs over 14.1 innings in that span.

While the results have been uneven since the injury, Perales remains one of Washington’s top pitching prospects. Improving command, getting ahead in counts, and maintaining effectiveness with his secondary pitches will be key areas of focus moving forward. His next scheduled start is expected to come in Charlotte, followed by a likely outing on July 4 in Rochester against Lehigh Valley.

The next few months will be critical and compelling as Perales continues to refine his game and push toward his Major League potential.