"I want to say that I'm very excited and looking forward to working with Wim," world No. 1 said.
The Swiss talked about passion for the sport after his win in Stockholm
All but two of the lucky losers are already out.
"He’s practicing 100 percent, hitting the ball super hard, hitting the ball really, really well," Carlos Alcaraz said of Rafael Nadal.
"I am still recovering, but getting better. Health always comes first," Serena said.
The WTA's prestigous season-ending event will be played from November 2-9.
This week's ATP ranking risers - and a special milestone for Daniil Medvedev
