An argument can be made that former-Celtic, Isaiah Thomas, is washed up. At 5'9" (at best), he never had NBA size, and post-surgery, he may never be the same. I am not making that argument - not yet. I won't be convinced he is washed up until I see him this season. The 76'ers T. J. McConnell got an embarrassing introduction to Isaiah on opening night in Boston in October of 2015.
It was McConnell's debut game as a rookie. He had a decent Summer league and pre-season, but this was for real.