New York Mets top pitching prospect Matthew Allan (elbow) reportedly underwent a revision UCL surgery and will miss the 2023 season. Allan had Tommy John surgery in 2021 and it appears that Allan needed a second operation. The 21-year-old has now undergone three elbow surgeries in his young career. Allan was ranked 10th on the Mets' top-30 list in 2022 and is expected to play a vital role in the rotation over the next couple of years. The right-hander hasn't played professionally since 2019, when he made five starts between the team's Rookie affiliate and the High-A Brooklyn Cyclones. Between the two teams, Allan molded a 2.61 ERA with 14 punchouts and a 1.45 WHIP. The former third-round pick is indefinitely out for the 2023 season and may even miss some time in 2024.

New York Mets top pitching prospect Matthew Allan (elbow), who had Tommy John surgery last May, had another operation to fix a nerve issue in his arm in January. Allan was the team's third-round pick in the 2019 MLB draft, and he posted a 2.61 ERA and 1.45 WHIP with 14 strikeouts and five walks in 10 1/3 innings over six outings (five starts) in his first professional season in 2019 with the Mets Rookie League affiliate and Low-A Brooklyn. Allan didn't pitch at all in the shortened 2020 season, and with his latest surgery, there's a chance that he misses all of the 2022 season as well. The 20-year-old probably won't be a realistic option to reach the majors until 2024, at the earliest. Allan generates easy mid-to-high 90s velocity with his fastball and is consistently around the plate with his curveball and changeup.