Tennis star Serena Williams is determined to come out swinging at the Australian open next month and is taking tips from heavyweight eight champion Mike Tyson on how to pack a punch.

At 38 years young, Williams is in supreme shape but still sees room for improvement, and this week’s boxing training session with Tyson should help her go blow for blow with her tennis rivals in 2020.

The 23-time grand slam champion is eyeing the elusive 24th title that would take her level with Margaret court’s record haul.

Williams last won a slam in 2017 at the Australian open, but since then she has lost two Wimbledon finals and two us open title matches.

Williams will begin her 2020 season at the Auckland open, with the WTA event running from January 6 to 12. The Australian open begins on January 20.