BOSTON, MA—The Boston Red Sox today claimed right-handed pitcher Max Castillo off waivers from the Kansas City Royals. The club’s 40-man roster is now at 40.

Castillo, 24, pitched in seven games for the Royals in 2023, recording a 4.43 ERA (10 ER/20.1 IP). The right-hander also posted a 4.58 ERA (59 ER/116.0 IP) in 22 games (21 starts) with Triple-A Omaha last season. Signed by the Toronto Blue Jays as an international free agent in 2015, the Venezuela native owns a 5.43 ERA (36 ER/59.2 IP) in 21 career Major League games (six starts) with Toronto (2022) and Kansas City (2022-23). Castillo has pitched this winter for Cardenales de Lara of the Venezuelan Professional Baseball League, going 5-0 with a 2.72 ERA (15 ER/49.2 IP) in 11 games (nine starts).

BOSTON RED SOX 40-MAN ROSTER (40)

Pitchers (24): Brayan Bello, Brennan Bernardino, Isaiah Campbell, Max Castillo, Kutter Crawford, Cooper Criswell, Wikelman Gonzalez, Tanner Houck, Joe Jacques, Kenley Jansen, Zack Kelly, Mauricio Llovera, Chris Martin, Bryan Mata, Chris Murphy, Luis Perales, Nick Pivetta, John Schreiber, Justin Slaten, Brandon Walter, Zack Weiss, Greg Weissert, Garrett Whitlock, Josh Winckowski

Catchers (2): Reese McGuire, Connor Wong

Infielders (7): Triston Casas, Bobby Dalbec, Rafael Devers, Vaughn Grissom, David Hamilton, Trevor Story, Enmanuel Valdez

Outfielders (5): Wilyer Abreu, Jarren Duran, Tyler O’Neill, Rob Refsnyder, Masataka Yoshida

Infielder/Outfielders (2): Ceddanne Rafaela, Pablo Reyes