Age: 21
Level: Low-A
Position: First baseman
Bats/Throws: Left/Left
Height/Weight: 6′ 4″/221 pounds
Acquired: 2025 Draft, 8th Round
Previous BSB Ranking: Unranked
Pic Credit: Fresno Grizzlies
Player Summary
Brief Summary
An eighth-round pick in the Rockies’ 2025 draft, Tanner Thach is a classic power-hitting first baseman who set UNC Wilmington’s all-time home run record with 54. He debuted with Low-A Fresno, slashing .279/.375/.397 in 18 games. The 6-foot-4, 225-pound lefty owns a compact, powerful swing.
More detailed breakdown
An 8th round selection in the Rockies’ 2025 draft, Tanner Thach is a traditional power-hitting first baseman who set the all-time home run record at UNC Wilmington with 54, including 27 long balls in his sophomore season alone. While his power numbers regressed in his final year in college with only 12 HR’s, he still hit for a solid .325 AVG and a .947 OPS, while cutting his K-rate from 19% to 15%.
After being drafted, Thach debuted for the Rockies with the Low-A Fresno Grizzlies, where in 18 games he slashed .279/.375/.397. His OPS of .772 was 5th on the team amongst players with at least 65 AB’s. The 6-foot-4, 225-pound lefty has a compact and powerful swing that can generate a ton of pop. He will need to hone his chase rate this year to more consistently tap into that power potential.
Player Links
Link to MLB.com player page | Link to Fangraphs | Link to Baseball Savant
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