Federer V John Millman few years ago took half an hour toilet break till sun went over his half cort, prior to taking the break Federer was hardly walking claiming groin problems, John Millman had him on the ropes literally then "wise" Swiss took looong toilet break around 30 minutes, do you think anyone said a thing, no! Federer came back recovered flying while John Millman went cold waiting that long, hence Federer came back from dead, stole victory illegaly from Millman in front of Australian crowd.
