Alexander Claudio (born January 31, 1992) is a Puerto Rican professional baseball pitcher for the Diablos Rojos del México of the Mexican League.

[1] Claudio spent his first professional season of 2010 playing for the AZL Rangers of the Rookie-level Arizona League, going 0–1 with a 6.60 ERA in 15 innings.

[2] He split the 2011 season Between the AZL Rangers and the Spokane Indians of the Low–A Northwest League, going a combined 5–0 with a 1.91 ERA over 28 innings.

He pitched a scoreless inning, and struck out Kevin Kiermaier for his first major league strikeout in his debut that night.

[2] Claudio was named the 2017 Texas Rangers Pitcher of the Year, following a season where he posted a 4–1 record with a 2.50 ERA, 56 strikeouts, and 11 saves over 82+2⁄3 innings in 70 games.

[7] Claudio was traded to the Milwaukee Brewers on December 13, 2018, in exchange for a competitive balance Round A draft pick.

[12] Claudio made 20 appearances for the Brewers in 2020, recording a 4.26 ERA with 15 strikeouts and 6 walks in 19.0 innings of work.

On August 10, 2021, Claudio signed minor league deal with the Boston Red Sox.

[20] On January 3, 2023, Claudio signed a minor league contract with the Milwaukee Brewers organization.

[21] He was assigned to the Triple-A Nashville Sounds to begin the year, where he posted a 3.00 ERA with 5 strikeouts and 2 walks in 7 appearances.