The question after each of the Boston Celtics' summer transactions -- and there have been a lot of them -- has been the same: Is Boston better than it was last season? The Celtics continued a dizzying summer overhaul with Tuesday's blockbuster that sent Isaiah Thomas, Jae Crowder, Ante Zizic?and the Brooklyn Nets' 2018 unprotected first-round pick to the Cleveland Cavaliers in exchange for Kyrie Irving. Boston now has just four players on its roster from last season's team that won an East-best 53 games. That's 11 players gone from a roster that advanced to the Eastern Conference finals before bowing to the Cavaliers in five games. It was that loss to Cleveland in May that served as a sort of barometer for judging Boston's summer moves. With each transaction, Celtics fans wondered if the gap had been closed a bit. There have been so many moves, though. Goodbye to key contributors such as Thomas, Crowder, Avery Bradley, ...