They could have had a better shot than that. But this game was lost because when Calderon (or Jack) switched and were guarding Amare, they didn't really try to switch with the bigger player who was hedging in the paint. A few times it happened and a few times the big tried to get Calderon to switch again, but to no avail. Another switch would have made big on Nash the only mismatch and wouldn't leave them so prone to getting abused by Amare in the post.