Alexander Zverev beats Novak Djokovic 6-4 6-3 to win ATP Finals
German, 21, wins season-ending title for first time
'The biggest title I have ever won,' says Zverev
Zverev lost to Djokovic in straight sets in the round-robin stage
World number one Djokovic had not lost a set until the final
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James Clayton: Time for the ATP Finals to move to a different city after 10 years? Great event - maybe run its course. There this week and atmosphere not great and often quite empty. If enthusiasm/appreciation not there then maybe time for another city to host these top players?
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*Djokovic 4-4 Zverev
Tim Henman
Former British number one on BBC TV
Zverev will just be hoping that this isn't a rerun of the round-robin match because he kept it close in that one to 4-4, then Djokovic won eight of the next nine games.
Image source, Reuters"Say cheese Novak!"
Image source, Reuters*Djokovic 4-4 Zverev
Zverev turns on the style and quickly surges ahead to 40-0 with a nice touch at the net and serves another wide serve to hold.
Nothing in this at the moment.
Image source, Reuters#bbctennis
Charlene Beedie: A real solid start from both players in this final so far but obviously, I'm rooting for Djokovic. Come on.
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Djokovic 4-3 Zverev*
Zverev does incredibly well to stay in the rally as Djokovic smashes a forehand into the corner. The Serb's overhead volley is straight down the path of Zverev but the German hooks his return and it sails long over the baseline.
Djokovic moves onto 40-15 as Zverev plants a forehand into the net and sends a return wide.
He completes the game with a wide serve which Zverev can only return outside the lines.
Image source, Getty Images
Jonathan Jurejko
BBC Sport at the O2
As expected, serve has been king so far. Both players have dropped three points in total in their three service games so far.
*Djokovic 3-3 Zverev
That's four aces from the German already. None yet for Novak.
Image source, Reuters*Djokovic 3-3 Zverev
Boris Becker
Three-time Wimbledon champion on BBC TV
It's getting physical out there, both players have to work a lot to win points. Indoor tennis used to be boring...
*Djokovic 3-3 Zverev
Djokovic pushes Zverev deep and it results in the German's forehand falling behind the baseline.
Zverev's first overhead slam is then lofted back into court by Djokovic but the world number five smashes the second volley into the corner. He follows that up with an ace. 30-15.
Djokovic uncharacteristically slices his backhand into the net. 40-15. And Zverev holds with another ace.
Djokovic 3-2 Zverev*
Boris Becker
Three-time Wimbledon champion on BBC TV
Djokovic bouncing the ball drove me crazy when I was his coach, it drives me crazy now. It's a habit, it's his rhythm. He says, 'I just get into it, I don't think about it'. It's just what he does.
Djokovic 3-2 Zverev*
Image source, Getty ImagesDjokovic's first unforced error draws Zverev level at 15-15. The Serb comes into the net but can only block the shots fired at him until his forehand at the body flops into the netting.
A pacey backhand down the line is almost touched over the net by Zverev but it falls inches short and the German swings his racquet in frustration. 30-30.
Zverev then flops a backhand into the net and Djokovic holds when the German's slice falls into the same spot.
Jonathan Jurejko
BBC Sport at the O2
Image source, Getty ImagesQuite a muted atmosphere in the O2. It has been all week to be honest.
Most of the blue-seats in the bowl have bums on them, apart from a few in the posh seats in the lower tier.
Spotted a few Serbia flags being wafted, not much visible German support.
Germany and Real Madrid midfielder Toni Kroos was here to watch Djokovic the other night, but he's lost his spot to that Beckham fella tonight...
*Djokovic 2-2 Zverev
Joel Newnham: I think we’ll see these two again in the Australian Open final in two months.
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*Djokovic 2-2 Zverev
Tim Henman
Former British number one on BBC TV
After the round-robin match that Djokovic won 6-4 6-1, it's important that Zverev asserted himself early on because that second set was a bit of a lesson. It's a good start from both players.
Image source, Getty Images*Djokovic 2-2 Zverev
Some tasty points on show already!
*Djokovic 2-2 Zverev
A quick one-two punch brings Zverev onto the board before he sends an excellent backhand wide into the corner. Only Djokovic could reach it - and he does - lobbing Zverev and winning the point.
Zverev responds with an ace and moves up to 40-15 with a controlled, soft touch at the net. He rounds it off with a neat forehand down the line which Djokovic sends into the cords.
Image source, ReutersDjokovic 2-1 Zverev*
David Beckham is courtside tonight for the final and looks ready to show off his catching skills. Remember when he caught a ball during a doubles match at Wimbledon in 2015?
Image source, ReutersDjokovic 2-1 Zverev*
Djokovic is up to 30-0 quickly thanks to two long returns from Zverev - one confirmed by an unsuccessful challenge.
Zverev tries to catch Djokovic out with backspin down the line but the world number one fizzes it back across court and holds to love with an accurate wide serve.
*Djokovic 1-1 Zverev
Image source, ReutersOosh! A fizzing cross-court backhand pushes Djokovic wide and Zverev slams the return into the open court.
He goes 30-0 up when Djokovic sends his return long but fluffs his next forehand as it drops into the net. 30-15.
The German moves 40-15 up then serves an ace to hold. So far, so good.