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.
LeBron James salutes Frances Tiafoe's masterful US Open win.
