updated 8:55 p.m. ET June 24, 2008

BOSTON - The Gatorade-stained shirt worn by Boston Celtics coach Doc Rivers as the team won its first NBA championship in 22 years has been auctioned for $55,000.

An anonymous bidder bought the shirt, autographed by Rivers and Celtics star Paul Pierce, and the accompanying Gatorade bucket at a charity auction on sports radio WEEI-AM's Web site. The proceeds will benefit the Boston Celtics Shamrock Foundation.

The foundation said Tuesday the high bid of $35,000 came from an anonymous bidder. Gatorade and a second anonymous donor each pledged $10,000 to bring the total to $55,000.

Celtics managing partner and foundation president Steve Pagliuca offered a personal donation of $35,000 to the charity if the winning bidder would share the shirt at certain times for display. No word yet on whether the bidder will accept the offer.

MORE FROM NBA

NBA Section Front

Rasheed to join Celtics Kidd reportedly will re-sign with Mavericks Getting Randolph another Memphis mistake Pistons talking to Avery Johnson for coach job Ventre: Artest puts everything in jeopardy for Lakers Vote: Will Artest be a distraction to Lakers? Hill: Herculean Shaq ready to deliver for Cavs SN Radio: Granger picks up the pace Rumors: Miami Heat interested in Iverson NBA players who became free agents on July 1 NBA Section Front   Add NBA headlines to your news reader: