Gausman was removed from Thursday's game against the Rangers due to lower-back tightness.
Gausman was able to get through five shutout innings on just 58 pitches while striking out six batters and walking one before his back forced him to make an early departure. The severity of his injury remains unknown, but the Jays will certainly keep a close eye on him leading up to his next start -- tentatively scheduled for Tuesday against the Red Sox.