Owen Caissie is headed to the Chicago Cubs’ MLB roster in August 2025 after Miguel Amaya’s ankle injury opened a spot. At Triple-A Iowa this season, Caissie has posted a scorching .289/.389/.566 with 22 homers and 26 doubles, plus a 114:53 K:BB. His 2024 numbers at Triple-A were strong, underscoring upside for fantasy managers in deeper formats. With Cubs’ outfield crowded and Seiya Suzuki at DH, Caissie’s path will hinge on earned at-bats, likely rotating with Happ and occasional shifts in left and right field.

For fantasy, Caissie is worth a speculative add in all 12-team five-outfielder leagues before his MLB debut, but riskier in shallower formats where a full-time role isn’t guaranteed. The Cubs still rely on Tucker, Crow-Armstrong, Happ, and Suzuki, so expect Caissie to earn opportunities gradually rather than slide into a full-time starter role immediately. His upside, especially with power, makes him a notable stash once roster spots open.

The article suggests Caissie could debut in Toronto and notes August 14, 2025 as a milestone call-up. In the meantime, managers should monitor Cubs’ lineups and practice-squad depth charts, ready to pounce as Caissie seizes a consistent role. Overall, Caissie’s power and on-base ability give him genuine late-season fantasy upside if he grips daily at-bats.