Looking Wawrinka and Tsonga going into a fifth set yesterday, while the light was decreasing, it was clear that it would be interrupted at some moment. But it doesn't seem fair to me. The player with the better stamina, the better strategy, the better momentum is disadvantaged because his opponent will have the opportunity to rest, to discuss the tactic or strategy with his coach, and to shift the momentum until the next day. In the fifth set, Tsonga was up a break, but he seemed more tired than Wawrinka, who could have had a lot of opportunity to counter-break. Today, they will resume at 4-2 for a fresh Tsonga, who will win the match with only to good serving games (and I believe it is easier to serve well two game entering the court than after 4 hour) What do you think? Do someone think that the interruption is fair, or favor Wawrinka? What about Del Potro vs Berdych?