The Toronto Blue Jays placed right-hander Erik Swanson on the 15-day injured list on Sunday.
The 29-year-old relief pitcher is suffering from thoracic spine inflammation.
Swanson’s last outing came on Saturday, where he pitched 1/3 of an inning and allowed one hit in an 8-3 win over the Cleveland Guardians.
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Toronto snapped a three-game losing skid with the victory and sits 1.5 games behind the Houston Astros for the third and final American League wild-card spot.
The Blue Jays also recalled right-hander Jay Jackson from Triple-A Buffalo.
Jackson will be active for Sunday’s series finale against the Guardians.