The news comes one day after Toronto learned that center fielder Vernon Wells would miss four to six weeks with a strained left hamstring, forcing Rios to move from right field to center. With Rios out against New York, as well, the Jays started Brad Wilkerson in center and utility man Joe Inglett in right in Friday's series opener.
This season, the 27-year-old Rios had managed a .285 average with four home runs, 24 doubles, 39 RBIs and 23 stolen bases in 89 games for the Blue Jays. Rios, who was an All-Star in each of the past two seasons, signed a six-year extension with Toronto worth $64 million in April.
Jordan Bastian is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.