Brett Lawrie singled home the winning run in the 10th inning, handing first-place Boston their fourth loss in six games.
They will volunteer time or reallocate funds to preserve seventh-grade sports in Portland schools.
Brett Brown of South Portland will take over a team that hasn't won a championship in 30 years.
A person with knowledge of the injury says Brady likely has a left knee sprain and is day-to-day.
Portland scores in the first three innings to beat the Altoona Curve, 5-2.
Adrian Wilson was signed for stability, leadership and toughness, and already is doing his part.
Shane Victorino singles in the winning runs in the 11th inning to give Boston a 4-2 win over the Toronto Blue Jays.
Corey, who died Sunday, was outstanding as a Bowdoin player, then as a football coach.