Thomaz Belluci is in my opinion much better tennis player than Christian Garin and in my opinion he will win in this match.
I choose to bet on correct score, 2 to 1 in sets for Belluci and i think that he will lose that one set only because he is not still in his form and he can not perform on high level like he usually play.
I think that Garin can take one set at this moment against Belluci, he is good tennis player and he sure can play with Belluci. But still Belluci is favourite and he will win in this match, he is olayer with a lot of experience