The injury appeared to have occurred after Iglesias beat out what might have been a double play, resulting in what was the go-ahead run at the time for the Tigers in the top of the fourth inning. Iglesias was moving gingerly after the play and was replaced by Ramon Santiago prior to the bottom of the fifth.
Iglesias, 23, has a .318/.365/.399 line in 339 plate appearances with the Tigers and Red Sox. Iglesias was the Tigers' return in a July trade that sent Jake Peavy and Brayan Villarreal to the Red Sox and Avisail Garcia, among others, to the Chicago White Sox.
The rookie shortstop took the place of Jhonny Peralta, who is serving a 50-game suspension for his involvement in the Biogenesis scandal, in the Tigers' lineup.
The Tigers have Thursday off before playing at Kansas City Friday.