Murray doesn't win in 2 sets, he has at least a 1 set lapse.
With his current mental fragility, a match against Stepanek worries me. However, he loves playing serve-volleyers and I imagine Sexy will look to do a fair bit of it, Muzza is the better player from the baseline. If he can keep his head, Andy can win. It brings back some lovely memories, he played fantastically well in their only previous meeting.