Pierce is the Celtics leader in three-point field goals and free throws, and second all-time leading scorer with 24,021 career points.
The final years of Pierce's career weren't as great - as happens often with former stars - but his time wearing the No. 34 for Celtics were among the best anyone had in the 2000s.
The Boston Celtics signed Paul Pierce on Monday so that he could retire as a member of the organization.
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He ended the 2016-17 season as the only active National Basketball Association player with at least 25,000 career points, 7,000 rebounds and 4,500 assists.
"It's an honor to have this opportunity to once again call myself a Boston Celtic", Pierce said. As he's now retiring following his signing, Pierce pointed out that, "I'm a Celtic for life".
The 39-year-old wrapped up his career with the Clippers over the past two years after playing just one season as a Net and one as a Washington Wizard. Garnett was also 41 when he retired in 2016. Pierce trails only John Havliceck for the most years spent in a Celtics uniform.
The 2008 NBA Finals MVP was showered with cheers whenever he returned to the Garden, including in what turned out to be his final game there in February. "At least I can say I put one last bucket in".