Roger Federer is focusing on the positives after surviving a scare in the first round of the US Open. Federer, a five-time winner at Flushing Meadows, overcame the 19-year-old American Frances Tiafoe in five sets on Tuesday night. 'There's a lot of positives for me to look at, that I can come through a five-setter with the preparation that I had,' he said US Open: Roger Federer forced to distance by upstart Frances Tiafoe