After her latest win Wang said she was playing the best tennis of her career, adding she felt more "confidence" on court and was hitting the ball more aggressively.
Nick Kyrgios and Stan Wawrinka were two of the big-name casualties to crash out of the Shanghai Masters in the first round on Monday.
Todd Woodbridge believes Nick Kyrgios is copping extra scrutiny from umpires but doesn't help himself by the way he engages with them.
"We don't really know and I don't think he really knows exactly what his potential is".
The Australian, who at times appeared largely disinterested in his 4-6, 6-4, 6-3 loss to American qualifier Bradley Klahn, engaged in a heated argument with chair umpire Damien Dumusois over the comment. You realise that, right?
Tiafoe, however, lost to Matthew Ebden 3-6, 6-4, 6-3.
"I think it's really up to him where he wants to go and what his potential really holds", the 20-time Grand Slam champion, Federer, said.More news: It's not right! Saha hits out at Pogba's Mourinho comments
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FOR the third year in succession, Nick Kyrgios has become the talking point of the Shanghai Masters for all the wrong reasons.
In his first round encounter with Steve Johnson previous year, Kyrgios received a warning for smashing two balls out of court in frustration and he walked away from the game entirely after losing the first set tiebreak. Sanghai is not the only scene of a Kyrgios controversy.
Klahn eventually wrapped up the match in one hour and 17 minutes, winning 4-6 6-4 6-3.
Three games later, Kyrgios smashed an ace and turned to Dumusois to ask "was that borderline poor?" before the French official told him "that's enough". He sets up a second-round match against his compatriot Taylor Fritz, defeat beat Robin Haase 6-3 7-6 (3).
This most recent Shanghai meltdown comes after Swedish umpire Mohamed Lahyani was suspended for giving the Aussie a mid-match pep talk in his second-round US Open win.
Last week, Kyrgios ceded his spot as Australia's highest-ranked male player to Alex de Minaur following a defeat at the Japan Open.
The talented but temperamental Kyrgios, who is ranked 38th in the world, has a chequered history with Shanghai.