US Open champion will work with Dmitry Tursunov in Washington, DC, Daily Mail reports.
Steve Johnson will replace Reilly Opelka in the Atlanta field and face Ilya Ivashka tonight.
Max Wenders, who coached Sofia Kenin and Demi Schuurs, was banned after admitting multiple match-fixing charges.
Rafa Nadal amps up his US Open preparation getting back into the swing of things.
Following his run to the Wimbledon semifinals, Cameron Norrie has high aims.
Former world No. 5 Tommy Robredo has faced each of the Big 3 and says one icon poses toughest test of all.
"If there would be more Russians like this, this war would have never started," Ukrainian Sergiy Stakhovsky said.
