Luis Guerrero #13

Selected by the Red Sox in the 17th round of the 2021 First-Year Player Draft…pitched one season at Chipola (Fla.) College, striking out 95 batters in 58.0 IP (14.74 SO per 9.0 IP)…made five appearances (four starts) in the MLB Draft League with the Frederick Keys in 2021.

2025

Made 13 Major League appearances across three stints with the Red Sox and went 0-1 with a 4.15 ERA (17.1IP, 8ER) and 10 SO…did not allow an earned run in his first 12 career games (Sept. 8, 2024–April 29, 2025)…also tallied 26 appearances total between Class-A Greenville (2G), Double-A Portland (3G), Triple-A Worcester (21G), going 2-2 with a 4.65 ERA (31.0IP, 16ER) and 27 SO on the season…placed on the 15-day IL on June 28 with a right elbow strain and was transferred to the 60-day IL Aug. 2…designated for assignment on Nov. 6 and outrighted Nov. 13 before being acquired by the Rays on Nov. 18 in exchange for INF Tristan Gray…went 1-1 with a 1.13 ERA (8.0IP, 1ER) in nine relief appearances for Leones del Escogido in the Dominican Winter League.

2024

Made his MLB debut, splitting the season between Triple-A Worcester (42 G) and BOS (9 G)...Threw a career-high 64.1 innings between the two clubs. Ranked in MLB’s 94th percentile in fastball velocity (97.5 mph). Went 5-3 with a 3.31 ERA, 79 SO, and a .198 opponent AVG with Worcester (54.1 IP, 20 ER, 39-for-197)...Threw 2.0+ innings in 11 of his outings, nine of which were scoreless. Ranked fourth among Triple-A pitchers in SO/9.0 IP (13.09; min. 50.0 IP)...Struck out at least one batter in 40 of his 42 appearances, including 2+ SO in 23 of them, 3+ SO in 11, 4+ SO in four, and five SO in one.

2023

Named the 2023 Red Sox Minor League Relief Pitcher of the Year...Recorded a 2.32 ERA (14 ER/54.1 IP) with a .157 opponent AVG, 1.23 WHIP and 68 SO over 49 appearances between Double-A Portland (43 G) and Triple-A Worcester (6 G)...Converted 18 of 22 save opportunities with POR...Pitched in the All-Star Futures Game on 7/8, striking out the only batter he faced.