Eric Lawson out, Josh McDonald in at Saturday’s "Strikeforce: Diaz vs. Noons" II

A cracked rib has sidelined Eric Lawson, who’s been forced out of Saturday’s preliminary-card bout with Ron Keslar at “Strikeforce: Diaz vs. Noons II.”

In his place steps fellow middleweight Josh McDonald.

Lawson on Wednesday confirmed the injury with MMAjunkie.com.