Hirsh's ankle was taped due to tendonitis, which may have prevented his ankle from breaking. The article also indicates that he may miss his next start.
That would mean Taylor Buchholz gets the start on Sunday. Actually, Cook will take the mound on Sunday.
Otherwise, it was a great night for Hirsh as he dominated the Mets. He just needs to keep adding outings such as this one to his cluster of starts in order for his rotation spot to be secured.