Cubs To Promote Owen Caissie For MLB Debut

The Cubs are planning to promote top prospect Owen Caissie, as reported by Kiley McDaniel and Jesse Rogers of ESPN. The young outfielder is already on the 40-man, and he will presumably take Miguel Amaya’s spot on the active roster. Amaya sprained his ankle tonight and will require an IL stint. As for Caissie, the Ontario native is expected to make his MLB debut tomorrow against the Blue Jays.

The Padres selected Caissie in the second round of the 2020 draft, and they flipped him to the Cubs that winter as part of the trade package that brought Yu Darvish to San Diego. He has since worked his way up Chicago’s minor league system, turning into one of the team’s most promising prospects. Baseball America ranked him 21st in the organization in 2021, eighth in 2022, 13th in 2023, fifth in 2024, and second in 2025. He has also ranked among BA’s overall top 100 prospects in each of the past three years. Not every source was quite as high on Caissie entering the 2025 campaign; FanGraphs dropped him off their top 100 list after ranking him 65th in 2024, while The Athletic’s Keith Law has never included Caissie among his top 100 prospects. Yet, none ever doubted Caissie’s huge raw power – the question was whether he could translate that power into success at the highest level.

That question loomed larger than ever after Caissie slashed .278/.375/.472 with a .195 isolated power and a 115 wRC+ in his season at Triple-A in 2024. Those are solid but hardly earth-shattering numbers, especially not for a bat-first corner outfielder. However, the lefty slugger has taken a massive step forward this year, with 22 home runs and 50 extra-base hits in 92 games for the Iowa Cubs. His .281 ISO and 145 wRC+ both rank fifth among qualified hitters in the International League. His strikeout rate is still high – that has always and probably will always be an issue – but a 28.0% K-rate certainly isn’t fatal, at least not if he keeps drawing his walks and crushing home runs.

None of this is to say that Caissie is a sure-thing, middle-of-the-order jolt for the Cubs’ lineup. He’s still just a 23-year-old prospect who has to prove his swing-and-miss issues won’t sink him against MLB pitching and, in particular, left-handed MLB pitching. Still, it’s exciting that he’s joining the team for the stretch run as they look to hold on to the NL’s top Wild Card spot and try to challenge the seemingly unstoppable Brewers for the NL Central crown. Any offensive boost he can provide will be much appreciated. The Cubs rank among the league’s best offensive teams on the season, but they’ve struggled as of late, scoring just 34 runs in 11 games since the trade deadline.

With that said, it’s worth wondering where Caissie would fit into Chicago’s lineup. He can play the corner outfield or DH, and the Cubs are set at those positions with Kyle Tucker, Ian Happ, and Seiya Suzuki. Tucker bats lefty like Caissie, while Happ is a switch-hitter with stronger splits against righty pitching. Suzuki bats right-handed, but he doesn’t have any trouble facing same-handed pitching. Ultimately, as the cliché goes, this is the best kind of problem for manager Craig Counsell to have. He can take advantage of Caissie’s presence on the roster to give his veterans a bit more rest, particularly the slumping Tucker. As long as Caissie hits, it will work out quite nicely. On the other hand, this means there’s quite a bit of pressure on the youngster to perform right away. The Cubs are as competitive as they’ve been in several years, and they can’t afford to take away reps from Tucker, Suzuki, and Happ if Caissie isn’t producing.

The roster fit isn’t perfect, but the Cubs only had four healthy minor leaguers on the 40-man roster to choose from, and it’s hard to argue that Caissie didn’t earn this opportunity over fellow top prospects Kevin Alcántara and Moisés Ballesteros, or the less-heralded Ben Cowles.

Image in post courtesy of Mark J. Rebilas, USA TODAY Sports.