I agree Mike Sams. Nadal and other top players do often win when they are not playing well and he could have easily lost that Rosol match in straight sets too. Nadal is tougher in the second week, but it's not just the slower turf, it's also that by then he has played himself into great form after early wins. Nadal, by that second week, focuses on what really works best for him. In general, it's amazing how the top players can win close sets time after time against lower ranked opponents, but they tend to have that extra gear of course on crucial points. Rosol just had one of those days when everything was working for him. Things went back to normal in the third round when Philipp Kohlschreiber beat Rosol 6-2, 6-3, 7-6.