Andy has been starting a bit slow in his matches so I am thinking that he is fully acclimated to the conditions now.
Andy also smells blood at this point. the title must seem within reach now.
so here is my thinking. I think tonight he focuses hard right from get go and tries to play a clean match. clean match means very few errors and high percentage tennis.
gain the upper hand in the rally and then go on the attack. pull the trigger at just the right time. Force Dimitrov to play more high risk tennis.
bottom line: I think Andy has a chance to take this in straights.
he is used to the surface and the conditions now.