Age: 21
Level: Low-A
Position: Starting Pitcher
Bats/Throws: Left/Left
Height/Weight: 6’2″/180 pounds
Acquired: 2022 International Free Agent
Current BSB Ranking: 27
Previous BSB Ranking: 31
Pic Credit: Baseball America
Player Summary
Brief Summary
Luichi Casilla flashed huge upside in 2024, striking out over 30% of hitters while touching 100 MPH from the left side. His season ended after a 7.00 ERA stateside debut when a serious arm injury required surgery that sidelined him for all of 2025. Casilla pairs his upper-90s fastball with a high-spin curveball that generates swing-and-miss. Now 21, 2026 will focus on his health, velocity return, and developing command as he begins his climb toward A-ball.
More detailed breakdown
When you see a 19-year-old throwing 100 MPH and striking out over 30% of batters, it is hard not to be excited. That player was Luichi Casilla in 2024. After his stateside debut in 2024, in which he posted a 7.00 ERA, Casilla suffered a nasty arm injury that required surgery, keeping him out for all of 2025.
As previously mentioned, he pumps an upper-90s fastball from the left side, which can end up being a plus-plus pitch in the future. He pairs it with a steep-sweeping curveball which offers big spin and a big plane for swing-and-miss. 2026 will be filled with questions. When will he be game-ready? Will his velocity be back? Does his feel for the strike zone get worse? Given his young age (21-years-old) and the fact that he’s never played at the A-ball level, we should be patient as his stateside career will begin to blossom this season. Written by Isaact Stevens.
Player Links
MLB.com player page | Fangraphs | Baseball Savant | Baseball Reference
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