Villanova said Thursday in a statement that Mahan died Tuesday. His funeral is scheduled for Saturday in Rydal.
A 1936 graduate of Villanova, Mahan played first baseman for the Phillies in the 1940 season, batting .244 with a pair of home runs and 39 RBIs.
He returned to Villanova in 1950 to coach the baseball team through 1972. In 1961, he was named director of athletics, a job he held until he retired in 1978.