The Pirates will be without A.J. Burnett for at least two months while the right-hander recovers from surgery for a facial fracture. Pittsburgh had hoped Burnett would be able to start April 5 in the opener at home against Philadelphia. Burnett had surgery Friday for a broken orbital bone near his right eye. He was injured when he fouled a ball off of his face Wednesday during a bunting drill. The Pirates acquired Burnett in a trade for two minor leagues last month.