I have no idea why Lue didn't start Thompson in game 1, especially after the C's made it known Morris was starting. Horford or Tatum has to guard Thompson in the post in that scenario with the other on Love, and that just seems like a bad match-up on that end. On the other hand, it also means Thompson, Love, and James have to collectively guard Horford, Morris, and Tatum, which is an advantage for the C's on that end (obviously James is still a credible defender, but the other 2 are not).