The Toronto Blue Jays placed shortstop Troy Tulowitzki on the 15-day disabled list Saturday with a right quadriceps strain.
Tulowitzki missed two straight games earlier this week with soreness in his quad before returning to the lineup for Friday's victory against the Boston Red Sox.
But Blue Jays manager John Gibbons told reporters that the five-time All-Star aggravated the injury Friday and was scheduled to undergo an MRI on Saturday.
The Blue Jays announced the roster move before Saturday afternoon's game against the Red Sox. Darwin Barney replaced Tulowitzki as Toronto's shortstop in the starting lineup, while left-hander Aaron Loup was activated from the 15-day DL to replace Tulowitzki on the active roster.