The line drive off Jeff Karstens' leg did more than knock the pitcher out of the game:

The New York Yankees lost another starting pitcher Saturday when Jeff Karstens was hit by a line drive, breaking his right leg.

On his first pitch of the game against Boston, Karstens was hit on the side of his knee by Julio Lugo's liner. He won't need surgery and is expected to return this season, team physician Dr. Stuart Hershon said.
"It's not as bad as it could have been," Hershon said.

In the clubhouse after the game, Karstens had an air cast on his leg. He won't need a conventional cast, Hershon said.

"They said no throwing tomorrow at least," Karstens joked.

Given his great relief work yesterday, I assume Igawa takes Karsten's spot in the rotation.