Alex Santos is finally getting his first look at Triple-A.
The Astros have promoted the 24-year-old right-hander to Sugar Land, according to his MiLB.com page, putting the former second-round compensatory pick on the doorstep of the highest level he’s reached in his pro career. When Santos takes the mound for the Space Cowboys, it will be his first Triple-A appearance.
Santos was Houston’s second-round compensatory selection in 2020 out of Mount St. Michael Academy in the Bronx, and this move gives him a shot to keep pushing toward Houston after a long climb through the system. The promotion also sets up what the organization is hoping becomes another step in his path to The Show sometime in 2027.
The right-hander earned the bump with his strongest professional season yet. Working out of the bullpen for Double-A Corpus Christi, Santos went 4-2 with a 3.38 ERA in 39 games.
He picked up three holds and three saves in five chances, struck out 82 and walked 33 over 53.1 innings, and held opponents to a .230 average. It was his first full season as a reliever, and the role has clearly suited him.
His road here hasn’t been smooth. Santos missed significant chunks of both the 2024 and 2025 seasons because of injuries, which slowed a development track that had been moving steadily since he began his pro career in 2021 with Class-A Fayetteville. He spent two seasons with the Woodpeckers before moving up to High-A Asheville in 2023, where he stayed for the entire year.
One of the more striking lines on his early resume came in 2022, when he went 0-11 with a 5.99 ERA in 23 games, including 14 starts, while striking out 104 and walking 37. Opponents hit .229 against him that season.
The injuries limited him to just 16 games and 52.1 innings across 2024 and 2025. In 2024, he went 0-5 with a 7.83 ERA in six games, five of them starts, with 24 strikeouts and 14 walks in 23 innings. Opponents hit .290 against him during his first season at Corpus Christi.
He showed some bounce-back in 2025. Over 10 games, including seven starts, Santos went 0-4 with a 4.60 ERA, struck out 38 and walked 23 in 29.1 innings, and held hitters to a .208 average. That was his best opponent batting average since 2021, when batters hit .205 against him in 41.2 innings.
Sugar Land is finishing up a home series with Oklahoma City through Sunday, and the Space Cowboys’ next home series begins Sept. 1 against Reno.
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