AP Photo by Winslow TownsonWe mentioned last week that Doc Rivers had put up his Gatorade-stained championship shirt for auction to raise money for charity. WBZ now reports that the shirt (signed by Doc and Finals MVP Paul Pierce) has sold for $35,000 to an anonymous bidder. What we didn't know previously is that the auction winner also gets the Gatorade bucket used in the soaking. That'll come in handy for future Gatoradings, we......