Casilla was a pop-up arm in 2024 for scouts after signing for $160k back in 2022. The 6’2”, 180-pound Dominican lefty was electric in a seven-start season in 2022 (1.19 ERA, 11.1 K/9 rate, 22 2⁄3 innings) in the Dominican Summer League, then got more playing time in 2023 in the DSL. That year, he threw 40 2⁄3 innings in 11 games with a 3.32 ERA, 1.40 WHIP, 9.7 K/9 rate, and 3.8 BB/9 rate.
Mid-season 2024 Rank: HM
High Ballot: 17
Mode Ballot: 21, 24, 29
Future Value: 40, back-end starter
Contract Status: 2022 International Free Agent, Dominican Republic, Not Rule 5 Eligible, three options remaining
MLB ETA: 2028
Casilla was moved stateside in 2024 to the Arizona Complex League, where he was 2.