It’s no secret that Dirk Nowitzki’s first sport back in Germany was tennis.

To this day, it’s only natural for the Dallas Mavericks superstar to still carry with him some passion for the sport. That’s why this Sunday, the former MVP will be hosting the first “Dirk Nowitzki Pro Celebrity Tennis Classic”.

Prior to the event, Nowitzki guested in’s Beyond the Baseline podcast where he also revealed the player who he thinks has the best tennis skills among those he’s played with.

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It’s actually funny. I’m not sure you guys remember. I used to play with a guy named Chris Anstey way back when I first got here. He was an Australian guy. I was at the time whatever, 19 or 20. I thought, you know I can play. This guy stands there and says I was No. 1 in Australia. And I was like, what is this guy talking about? I’m gonna murder him, right. So then one day at our old coach Nellie’s house, he had two rackets. Anstey’s like why don’t you come out and we’ll play a little bit? This guy beat me 6-0. I didn’t even see the ball. He was amazing. That’s probably the best basketball/tennis player I’ve ever seen. He was incredible. Since he’s out of the league now, I’m not sure.

Anstey played three years in the league and his last stint with the Mavericks was during Dirk Nowitzki’s rookie year back in the 1998-1999 season.