PHILADELPHIA (AP) _ Philadelphia Phillies third-base coach John Vukovich was scheduled to have surgery Tuesday morning to remove a mass from his head.

Vukovich, 53, has been bothered by constant headaches since spring training. He had an MRI exam at Thomas Jefferson University Hospital in Philadelphia on Sunday and was admitted after test results were examined Monday. Neurosurgeon Dr. David Andrews is scheduled to operate.

Marc Bombard, the manager of the team's Triple-A affiliate in Scranton/Wilkes Barre, replaced Vukovich for the Phillies' series at Houston that began Monday night.

``It was a special game for our players, they had their minds elsewhere tonight,'' manager Larry Bowa said after the Phillies' 5-0 victory over the Astros. ``He's going to be operated on tomorrow and I'm proud of what the guys did.''

Robert Person allowed a career-low two hits and pitched his second shutout for the Astros.

``That was definitely for Vukovich,'' Person said. ``Vuke is such a key part of our team. Not having him here is so unusual.''

Vukovich was among the finalists when the Phillies hired Bowa in November to replace Terry Francona.