Rodriguez landed on the 10-day disabled list on Friday, the day after his worst start of the season. He slipped and fell prior to the game against the Orioles while throwing on flat ground, but he felt fine to pitch, eventually giving up seven earned runs over 5 2/3 innings.
Rodriguez was in the midst of a breakout season and had been one of Boston's more consistent starters, with a 3.54 ERA in 61 innings over 10 starts.
Surgery is still a possibility down the line for Rodriguez, which would likely shelve him for five to six months. Aggravating the injury would cause further concern, and Rodriguez had the same injury in Spring Training 2016.
In the meantime, Boston's rotation has been buoyed by the return of David Price, who threw seven innings of one-run ball on Saturday. The Red Sox are hoping to finally have their rotation completely healthy by the All-Star break.
Ben Weinrib is a reporter for MLB.com based in Cleveland. This story was not subject to the approval of Major League Baseball or its clubs.