Tomas Etcheverry appeared to be suffering in the heat during his US Open clash against Francisco Cerundolo on Wednesday. So much so that before returning to a late game, the Argentine threw up all over the court. Remarkably, Etcheverry managed to overcome his belly problems and claim victory over his countryman on a scorching day at Flushing Meadows. Temperatures reached the mid-30s in New York while Etcheverry’s second-round clash against Cerundolo went the distance before he sealed a6-3 4-6 6-4 1-6 6-3 victory. Several players had found it difficult to compete in the heat but none more than …