The Pole is starting to look like the player to beat in New York.
Coach Wayne Ferreira traces Frances Tiafoe's evolution from talented pro to Grand Slam semifinalist.
"I honestly feel like s--t," said Nick Kyrgios after falling in the US Open quarterfinals.
Serena Williams didn't win the US Open, but made the US Open a big winner.
Ons Jabeur is on a major mission.
The Norwegian says the past is the past as he praises the play of Nick Kyrgios.
"He's possibly going to be No. 1 in the world," Matteo Berrettini says of Casper Ruud.
