Quite possibly. From Dylan Hernandez at the LA Times:
The news went from bad to worse for the Dodgers on Tuesday, as they put Brad Penny on the 15-day disabled list and sent Hiroki Kuroda to Los Angeles to undergo a shoulder examination similar to the one Penny had a day earlier.
Kuroda will have an MRI exam this morning, making him unavailable to make his scheduled start tonight in Cincinnati. If Kuroda is cleared by team physician Dr. Neal ElAttrache to resume pitching immediately, he will start at Dodger Stadium on Saturday when the Dodgers play host to Cleveland, Manager Joe Torre said.
Can this get any worse? Ugh.