CLEARWATER, Fla. - Former Phillies pitcher Tug McGraw was admitted Thursday to a Florida hospital, gravely ill with a brain tumor, a source said. McGraw, 58, a star reliever when he played with the team, was the Phillies guest pitching instructor at spring training The Phillies withheld details of McGraw's illness, saying only that he was undergoing tests at Morton Plant Hospital. "I'm very concerned about Tug," Larry Bowa said Thursday. "We're praying for him." Asked if he's going to visit McGraw, Bowa said, "From what I understand, I don't think he can have visitors right now." McGraw has been...