Alimber Daviel Santa (born May 3, 2003) is a Dominican professional baseball pitcher for the Houston Astros of Major League Baseball (MLB). He made his MLB debut in 2026.
Career
On February 28, 2020, Santa signed with the Houston Astros as an international free agent. He did not play in a game in 2020 due to the cancellation of the minor league season because of the COVID-19 pandemic. Santa made his professional debut in 2021, splitting the season between the Dominican Summer League Astros and rookie-level Florida Complex League Astros. He made three appearances split between the FCL Astros and Single-A Fayetteville Woodpeckers in 2022, pitching to a 13.50 earned run average (ERA) with four strikeouts over two innings pitched.
Santa returned to Fayetteville for the 2023 season, registering a 3-9 record and 5.98 ERA with 119 strikeouts across 87+1⁄3 innings pitched. He split the 2024 season between the FCL Astros, the Single-A Fayetteville Woodpeckers, and Double-A Corpus Christi Hooks. In 19 appearances for the three affiliates, Santa posted a combined 1-2 record and 6.47 ERA with 49 strikeouts and one save across 40+1⁄3 innings pitched.
Santa began the 2025 season with Double-A Corpus Christi. He was selected to represent the Astros organization at the 2025 All-Star Futures Game.
On May 22, 2026, Santa was selected to the 40-man roster and promoted to the major leagues for the first time. He made his MLB debut on May 25, pitching the final two innings of a combined no-hitter against the Texas Rangers. Santa's first career strikeout secured the final out of the combined no-hitter. Santa finished the no-hitter in relief of the starter, Tatsuya Imai and reliever Steven Okert. Santa became just the second pitcher in MLB history to pitch in a no-hitter in their major league debut. The first was Bumpus Jones, who did so in 1892 for the Cincinnati Reds.