Pospisil is in the second bracket with Dancevic, could meet in the third round of qualifying (but neither will make it).
Diez and Polansky are in the same section of the draw as well and could play each other in the second round of qualifying, also unlikely.
Vasek might. That's a weak top half. He should beat Tatlot. Schwank is coming off of injury and I haven't seen Lojda do anything lately.
Frank could beat M&M, and Bachginer, though it's unlikely. I feel like Bachinger will qualify beating Frank in round 2 and Vasek in round 3.
There are no real clay courters in the Polansky/Diez section. Golubev is good on the surface however, and should be Peter if he's on. I don't know much of Kudla on clay but it'll probably be good enough to beat Steven. I'd be happy with 1 of them in round 2 to be honest but ir probably won't happen.