Defending champion Novak Djokovic on semifinal collision course with Roger Federer.
World No. 1 practiced at US Open wearing knee brace today.
The American will work with Kamau Murray, her longtime coach
The defending champs are at the top of the lest.
Coco Gauff is a New Balance name brand.
Practicing with Roger Federer changed Felix Auger-Aliassime's perspective.
Romania to host Russia in February 7-8th qualifier.
