Joe Mazzulla perfectly captures why Isaiah Thomas will always be a Celtics icon

Boston Celtics, Isaiah Thomas, Joe Mazzulla. | Brian Babineau/GettyImagesIsaiah Thomas didn't need a championship or anything more than a brief stay in Boston to become an all-time Celtic. In two-plus years there, he left an indelible mark on both.

Starring as a David while battling against Goliaths, the five-foot-nine guard inspired a region, a franchise, and any undersized hooper who witnessed Thomas become an MVP candidate.

Friday night, "The King of the Fourth" returned to TD Garden. The Celtics honored Thomas as part of their "Legendary Moments" campaign. It runs in conjunction with when they don their gold City Edition jerseys to commemorate iconic moments throughout the history of the…