Blue Jays southpaw Joe Mantiply will undergo arthroscopic surgery on his injured left knee, manager John Schneider told reporters Thursday (relayed by Arden Zwelling of Sportsnet). The veteran reliever went on the injured list a couple weeks ago with what was initially diagnosed as inflammation.
It seems there’s some damage beyond inflammation that requires a scope to correct. (The Blue Jays didn’t provide specifics on Mantiply’s injury, but arthroscopic knee procedures frequently involve a meniscus or patellar tendon repair.) Schneider didn’t give a return timeline but said the Jays don’t believe it’ll be a season-ending procedure.
Mantiply finished last season in Triple-A in the Toronto system. He returned on a minor league deal midway through Spring Training. The Jays selected him onto the MLB roster a couple weeks into the regular season. Mantiply pitched well before the injury, working to a 2.04 ERA across 17 2/3 innings. He fanned 16 of 71 opponents (22.5%) while issuing only four walks.
The 35-year-old southpaw sits in the 88-89 mph range with his sinker. His arsenal is geared more towards weak contact than whiffs — this year’s league average strikeout rate notwithstanding — and he has mostly pitched in low-leverage spots. His loss is nevertheless a hit to an area in which the Jays were already lacking.
Brendon Little, their projected top left-handed bullpen arm, had a horrible start to the season and has been in Triple-A since early April. He’s missing bats in the minors but walking too many hitters. Mason Fluharty and rookie Adam Macko are the two lefties in the MLB bullpen. Ricky Tiedemann is on the 40-man roster but hasn’t pitched since 2024 due to elbow issues. Although Macko has been sharp over his first six MLB appearances, this figures to be a clear target for the Jays if they’re in position to add at the deadline.
Mantiply is one of 10 pitchers on Toronto’s injured list. Depending on his recovery timeline, he could move to the 60-day IL when they need to open another 40-man roster spot.