Mats Wilander discussed Alexander Zverev's performance in the Cube on Eurosport after his defeat to Denis Shapovalov.
Wilander touched on comments made by Zverev about the financial aspect of the game and he said he should change his mindset.
"I thought it was interesting when you asked him about sacrifices that you make when you're on tour. I've never heard Nadal, Federer or Djokovic mention money," said Wilander on Eurosport.
"Sascha mentioned being away from home but it's a good job, I'm going to make a bunch of money. I hope Sascha gets it together that he doesn't want to be Number One but needs deep in his heart to be the best player he can be."