Istomin to win ATP Moscow @17, Berdych to win ATP Stockholm @2.38, Haas to win ATP Vienna @6.5
I can almost guarantee that if you take whatever unit you're risking on Berdych and keep risking that + the profit of the win from the previous round you'll make more than 2.38. In addition, it also will give you the option of greening out at any given moment if for whatever reason something makes you want to green out (injury, running into a player in white hot form, playing long matches on back to back days).
Going to actually do that to see what ends up being more profitable (if he does end up winning the whole thing)
Risking 100 on Berdych to beat Zop at 1.05