Serena Williams vs. Li Na takes place this afternoon in the final of the TEB BNP PARIBAS WTA Championships.
The WTA Championships final match takes place on Centre Court and is scheduled to start at 15:00 GMT.
In the UK, the game airs live on Eurosport 2/Eurosport 2 HD, while it is also streaming live online with bet365.
Watch Williams vs. Li live here:
Li has had a great WTA Championships and has looked very much in control throughout the week. Her performance against a previously injured Sara Errani in the first round showed mental fortitude that has sometimes eluded her in the past.
She followed up her win over Jelena Jankovic at the US Open with another fine win, and then had to maintain concentration when she met another injured opponent in Victoria Azarenka. It looked for all the world that Petra Kvitova’s marathon against Angelique Kerber had taken its toll, as Li was able to dispatch her in straight sets 6-4 6-2.
With that win, Li not only becomes the first Asian player to reach the WTA Championships final, but she also finishes the year as the highest ranked Asian player, as she is the new world No. 3.
Williams had also been in commanding form throughout the tournament, playing three straight days with three straight sets wins, and it looked like she was heading for the same in the semi-final racing to a 3-1 lead. But inexplicably, the world No. 1 started to look as though she was in real distress, with no call for the trainer.
Initially this seemed to throw Jankovic, as the first set was edged out in Williams’ favour, but in the second set the Serbian seemed to get herself together enough to take advantage of what looked like a lack of movement from Williams.
The third set saw a return to the Williams of old, better movement through that service action, more noise on points, but once again she opened the door for Jankovic to come back from a 1-5 deficit. Williams won through in the end, but the end of year fatigue may be taking its toll.
"I think my body's a little tired after so many matches - I think yesterday I kind of hit a wall," Serena said on Saturday.
"But I'm just fighting out here. Honestly I'm just happy to still be in the tournament, and I'm honoured to be in the final again."
If Li can keep her wits about her, and if Serena is affected by injury, there could be a new WTA Champion and another little slice of history later today.