Stefanos Tsitsipas has become the youngest winner of the ATP Finals since Lleyton Hewitt in 2001

The 21 year old has come from a set down to beat Austrian Dominic Thiem in a third set tie break at London's O2 Arena.

Meanwhile, New Zealand's Michael Venus has confirmed he is splitting with doubles partner Raven Klaasen after finishing runners up in the ATP Finals.

Venus will team up with Australian John Peers in 2020.

Breakers owner Matt Walsh accepts his club could be developing a bad boy image.

The club's latest signing Glen Rice Junior will appear in an Auckland court on Wednesday, after being arrested for an alleged assault on Thursday.

The club will make a decision on his future later in the week.

Walsh says being the competition's 'bad boys' wasn't in their plans.

Danny Lee has imploded on his final hole of the day at the latest PGA Tour event in Mexico.

The kiwi golfer has had an eight on the 16th hole in near darkness to slip to 3 over for his round and eight under for the tournament in a tie for 26th.

The tournament will be completed tomorrow due to darkness.