BOSTON - Boston Celtics legend Paul Pierce believes Kevin Garnett's No. 5 will soon hang alongside Pierce's No. 34 in the rafters at TD Garden. After Pierce's number was retired Sunday in Boston, the 10-time All-Star wondered if, in an era of players switching teams in free agency, it might be a while before Boston's next number retirement. Pierce later told ESPN that he believes Garnett is a slam dunk to join him. "Without a doubt, KG's number will be [the next one] retired in Boston," said Pierce. "It's going to happen." Celtics president of basketball operations Danny Ainge said that the team has had informal discussions about retiring Garnett's number but said that a final decision would come from ownership. Pierce, who played his first 15 seasons in Boston, signed a one-day contract with the Celtics this summer in order to retire as a member of the team. Celtics co-owner Wyc Grousbeck later called Pierce to tell him the team planned to retire his No. 34 this...