This a partial list of Minor League Baseball players in the Houston Astros system and the rosters of their minor league affiliates.
Players Kevin Alvarez
Kevin Reynaldo Alvarez (born January 13, 2008) is a Cuban professional baseball outfielder in the Houston Astros organization.
Alvarez was born in Cuba and left in 2021 to live in the Dominican Republic. He was rated among the top international prospects in the 2025 class and signed with the Houston Astros in January 2025. He made his professional debut that year with the Dominican Summer League Astros.
Alvarez started the 2026 season with the Fayetteville Woodpeckers.
Trey Dombroski
Howard Joseph Dombroski (born March 13, 2001) is an American professional baseball pitcher in the Houston Astros organization. He played college baseball for the Monmouth Hawks.
Dombroski grew up in Manasquan, New Jersey and attended Wall High School. He was named the NJ.com Pitcher of the Year as a senior.
Dombroski's freshman season was cut short by COVID-19. As a sophomore, he went 5-1 with a 2.73 ERA. After the season, Dombroski played for the Harwich Mariners of the Cape Cod Baseball League and was named the league Pitcher of the Year. As a junior, he was named the MAAC Pitcher of the Year.
Dombroski was selected in the fourth round in the 2022 Major League Baseball draft by the Houston Astros. He signed with the Astros on July 23, 2022, and received a $443,900 signing bonus.
Monmouth Hawks bio
Cole Hertzler
Cole Garrett Hertzler (born June 21, 2003) is an American professional baseball pitcher in the Houston Astros organization.
Hertzler attended Boyertown High School in Boyertown, Pennsylvania and played college baseball at Liberty University. He was selected by the Houston Astros in the fourth round of the 2024 Major League Baseball draft.
Hertzler made his professional debut in 2024 with the Fayetteville Woodpeckers and played 2025 with them. He started 2026 Asheville Tourists before being promoted to the Corpus Christi Hooks.
Anthony Huezo
Anthony Huezo (born November 2, 2005) is an American professional baseball outfielder in the Houston Astros organization.
Huezo attended Etiwanda High School in Rancho Cucamonga, California. He was selected by the Houston Astros in the 12th round of the 2023 Major League Baseball draft.https://www.baseballamerica.com/stories/after-breakthrough-2025-anthony-huezo-looks-like-a-prospect-find-for-the-astros/ He made his professional debut that year with the Florida Complex League Astros.
Huezo played 2024 with the FCL Astros and appeared in seven games with the Asheville Tourists and one game with the Corpus Christi Hooks. He played 2025 with the FCL Astros, Fayetteville Woodpeckers and two games with the Sugar Land Space Cowboys. After the season, he played for the Sydney Blue Sox in the Australian Baseball League.https://www.baseballamerica.com/stories/astros-anthony-huezo-goes-down-under-to-make-up-at-bats/
Huezo started 2026 with Fayetteville before being promoted to Asheville and Corpus Christi.https://www.mlb.com/news/anthony-huezo-adds-another-home-run-in-breakout-season
Michael Knorr
Michael Jacob Knorr (born May 12, 2000) is an American professional baseball pitcher in the Houston Astros organization.
Knorr attended Carlsbad High School in Carlsbad, California. He was selected by the San Diego Padres in the 40th round of the 2018 Major League Baseball draft, but did not sign. He played three years of college baseball at California State University, Fullerton before transferring to Coastal Carolina University in 2022.
After one year at Coastal Carolina, Knorr was selected by the Houston Astros in the third round of the 2022 Major League Baseball draft. He signed with the Astros and spent his first professional season in 2023 with the Fayetteville Woodpeckers and Asheville Tourists. He started 2024 with the Corpus Christi Hooks.
Cal State Fullerton Titans bio Coastal Carolina Chanticleers bio
Bryce Mayer
Bryce Matthew Mayer (born February 11, 2002) is an American professional baseball pitcher in the Houston Astros organization.
Mayer attended St. Francis Borgia High School in Washington, Missouri and played college baseball at St. Charles Community College and the University of Missouri. He was selected by the Houston Astros in the 16th round of the 2024 Major League Baseball draft.
Mayer made his professional debut in 2024 with the Fayetteville Woodpeckers. He started 2025 with Fayetteville and was promoted to the Asheville Tourists and Corpus Christi Hooks during the season.
Jackson Nezuh
Jackson Thomas Nezuh (born February 11, 2002) is an American professional baseball pitcher in the Houston Astros organization.
Nezuh attended TNXL Academy in Ocoee, Florida and played college baseball at Florida State University for two seasons before transferring to University of Louisiana at Lafayette. In 2022, he played collegiate summer baseball with the Brewster Whitecaps of the Cape Cod Baseball League. After one year at Louisiana, he was selected by the Houston Astros in the 14th round of the 2023 Major League Baseball draft.
Nezuh made his professional debut in 2024 with the Fayetteville Woodpeckers and ended the season with the Asheville Tourists. He started 2025 with the Corpus Christi Hooks.
Florida State Seminoles bio Louisiana Ragin' Cajuns bio
Alex Santos
Alex Zavier Santos (born February 10, 2002) is an American professional baseball pitcher in the Houston Astros organization.
Santos grew up in The Bronx and attended Mount Saint Michael Academy. He had committed to play college baseball at Maryland.
Santos was selected in the 2nd round of the 2020 MLB draft by the Houston Astros. He signed with the team and received a $1.25 million signing bonus. Santos spent the 2021 season with the Fayetteville Woodpeckers of the Low-A East and posted a 2–2 record with a 3.46 ERA and 48 strikeouts in innings pitched.
Jason Schiavone
Jason Christopher Schiavone (born March 19, 2003) is an American professional baseball catcher in the Houston Astros organization.
Schiavone attended St. John's College High School in Washington, D.C. and played college baseball at James Madison University (JMU). He was selected by the Houston Astros in the 11th round of the 2024 Major League Baseball draft.
Schiavone made his professional debut in 2024 with the Fayetteville Woodpeckers and played 2025 with Fayetteville and Asheville Tourists. He started 2026 with Asheville before being promoted to the Corpus Christi Hooks.
Joseph Sullivan
Patrick Joseph Sullivan III (born July 1, 2002) is an American professional baseball outfielder in the Houston Astros organization.
Sullivan attended Vestavia Hills High School in Vestavia Hills, Alabama, where he played baseball. As a senior in 2021, he hit .402 with thirty RBIs. After graduating, he enrolled at the University of South Alabama where he played college baseball for the Jaguars. As a sophomore in 2023, he played in 52 games and batted .304 with 13 home runs, 44 RBIs, and twenty stolen bases. Sullivan missed time during his junior season due to a wrist injury, but still started 38 games and hit .266 with nine home runs and 32 RBIs. After the season, he was selected by the Houston Astros in the seventh round of the 2024 Major League Baseball draft.
Sullivan signed with the Astros for $239,900. After signing, he made his professional debut with the Fayetteville Woodpeckers, hitting .250 with five doubles over twenty games. Sullivan was a non-roster invitee to 2025 spring training, and hit Houston's first home run of the spring. He was assigned to the Asheville Tourists to open the 2025 season. In July, he was promoted to the Corpus Christi Hooks. Over 106 games between the two teams, Sullivan hit .220 with 17 home runs, 49 RBIs, and 42 stolen bases. He was assigned to play in the Arizona Fall League with the Scottsdale Scorpions after the season. Sullivan was assigned to Corpus Christi for the 2026 season. Over 80 games, he batted .221 with 11 home runs, 38 RBIs, and 20 stolen bases while missing time due to injury.
Sullivan's grandfather, Pat Sullivan, won the 1971 Heisman Trophy.
South Alabama Jaguars bio
Alonzo Tredwell
Alonzo Slote Tredwell III (born May 8, 2002) is an American professional baseball pitcher in the Houston Astros organization.
Tredwell was born in Marblehead, Massachusetts, but moved to Orange County, California at the age of five. He grew up in Coto de Caza, California attended Mater Dei High School in Santa Ana, California. He played college baseball for the UCLA Bruins. In Tredwell's freshman season, he pitched in 47 innings, posting a 2.11 ERA, and 62 strikeouts, leading to him being named a consensus Freshman All-American and earning All-Pac 12 honors. In 2022 Tredwell had a bit of a step down pitching a 3.57 ERA and 51 strikeouts against only 12 walks in 45 and 1⁄3 innings. Then in 2023 Tredwell started in nine games, having a 3.57 ERA.
Tredwell was drafted by the Houston Astros in the second round with the 61st pick of the 2023 Major League Baseball draft. On July 18, 2023, he signed with the Astros for $1,497,500.
UCLA Bruins bio
Full Triple-A to Rookie League rosters
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References