Toronto activated Taillon (forearm) from the 15-day IL and he will start Friday's game against the Royals.
Taillon, who has been shelved since Aug. 11, will make his return to the big-league mound Friday. In two starts for Toronto since being traded by the Cubs, the right-hander owns a 3.38 ERA, 1.50 WHIP and 7:5 K:BB over eight innings. The Blue Jays optioned Ricky Tiedemann to Triple-A Buffalo to clear a roster spot for Taillon.