Well, 1st day in Hamburg and already a bad start. Marcos had to retire, because he's still very bothered by that cold he caught in Rome. I've seen the 1st set and he really was in pain. That was almost aching inside, having to see him that way. And especially when he looked at his coach, Guillaume, and said, showing his chest "j'arrive pas". He indeed couldn't breathe properly. Poor Marcos. Hope he gets better soon.