Age: 24
Level: Double-A
Position: Relief Pitcher
Bats/Throws: Right/Right
Height/Weight: 6’3″/160 pounds
Acquired: 2025 MiLB Free Agent
Previous BSB Ranking: NA
Pic Credit: Twins Daily/Reading Fightin Phils
Player Summary
Brief Summary
Eiberson Castellano, a 24-year-old right-handed relief pitcher, signed with the Rockies as a MiLB free agent. Despite a challenging 2025 season with a 6.44 ERA in Double-A, his 3.99 xFIP suggests underlying potential. Castellano features a 93 MPH fastball, a steep curveball, and a promising changeup, indicating low-leverage reliever potential.
More detailed breakdown
Typically, players signed as minor league free agents do not make it in top prospect lists, but Eiberson Castellano offers an intriguing skillset to the Rockies. In 2025, the right-hander struggled in Double-A, putting up a 6.44 ERA in 36.1 IP. However, his 3.99 xFIP implies there was misfortune in his appearances. It is worth noting that in 2024, Castellano won the Phillies MiLB Pitcher of the Year award, where he posted a 3.99 ERA across 103.2 IP with a 31.3 K% and 6.7 BB%.
The former Phillies minor leaguer has intriguing pitch characteristics. His fastball averages around 93 MPH, but he has solid extension that makes it look a tick or two faster. Then Castellano throws a steep curveball, with a ceiling of an above-average MLB pitch; his feel for it is inconsistent, however. He offers a changeup that gets good arm-side movement. Pair all of that together, and you are looking at a low-leverage reliever who might make a spot start or two.
Player Links
Link to MLB.com player page | Link to Fangraphs | Link to Baseball Savant
Leave a Reply