Paraphrasing from the ESPN article...
Last Friday, Doug Glanville hit two home runs against his former teammate, Curt Schilling, in Schilling's first start against the Phillies since they traded him last July. Explaining his excellent performance Glanville said, "We used to play video games together. He killed one of my [Everquest] characters one time. I never forgot that."
Full story here
(Yep, stolen from slashdot)