Yankees manager Aaron Boone says he plans to use the two-time All-Star out of the bullpen. New York began the day 1 1/2 games behind Toronto for the second AL wild-card spot.
The 27-year-old Severino has completed his rehabilitation from Tommy John surgery on Feb. 27, 2020. The right-hander made four minor league appearances totaling 10 2/3 innings for Tampa, Hudson Valley and Somerset, allowing four runs, five hits and one home run with three walks and 15 strikeouts.
A 19-game winner in 2018, he was limited by shoulder soreness to three appearances in 2019, the first on Sept. 17 and the last on Sept. 28, plus a pair of postseason starts that Oct. 7 against Minnesota in the AL Division Series and Oct. 15 against Houston in the AL Championship Series.
Right-hander Sal Romano was released by the Yankees to open a roster spot.
In a pivotal stretch of the season, the Yankees are just 5-5 in their last 10, and have lost two in a row, while the Blue Jays and Red Sox have put a touch of distance between the rest of the field.
The Associated Press contributed to this report.