6/4 7/5 for Marcos. I'd say it was a good match, considering it's a return to competition. Marcos has absolutely to improve his serve, because he almost had no 1st serve, and even when he was successfull, it wasn't efficient enough.
The 1st set has been full of breakpoints opportunities for Kohlschreiber (6) that he's been unable to convert. Marcos has had only 1, which was the set point that he converted.
In the 2nd set, Kohlschreiber, frustrated after that 1st set, played really good tennis, and Marcos lost a bit of concentration. Hence the break for the German. Marcos kept on fighting and finally broke back when Kohlschreiber was serving for the set, bringing it back to 5/5. That 11th game has lasted and lasted....with break opportunities for both, but finally, Marcos, who was encouraging himself a lot, won his serve game. I guess that's where Kohlschreiber lost grip on the match.
A win is a win. Good job Marcos.