Highlights of the fourth day of the Australian Open on Wednesday (all times GMT):1257 PAUL DEFEATS NISHIKORIFormer semi-finalist and American 12th seed Tommy Paul survived a first-set scare to beat Japan's Kei Nishikori 6-7(3) 6-0 6-3 6-1,

“The AO is something that connects really well with New Balance because the mix of sport and culture they have is incredible,” Evan Zeder, New Balance director of global sports marketing for tennis, tells me. “I think the AO is a perfect mix and it is just a big party.”

Australian Open is showcasing a crop of young men's players who are better equipped for the changes in tennis than their elders.

Keen to know who is playing in the Australian Open today? Wednesday ushers in the second round of action in Melbourne with plenty of enticing matches featured. The likes of Aryna Sabalenka and Novak Djokovic will play in the day session,

Coco Gauff plays a backhand return to Jodie Burrage during their second-round match at the Australian Open on Wednesday.

It didn't take long for a big upset to go down at the Australian Open. To the surprise of many, Laura Siegemund defeated Qinwen Zheng in the second round of the tournament. Zheng was a popular pick coming into the Australia Open due to last year's success.