Kerber digs deep. Looking down the barrel, that leftie forehand keeps her in it. Puig must serve it out.

It's incredible from Puig. Everything she hits is either finding a line or proving to be unreturnable. Match point...

Puig is on a mission to finish this quickly, seemingly unfazed by the history that beckons. Line after line hit. Kerber must serve to stay in the match.

Aimee Lewis
BBC Sport in Rio

"Puerto Rico!" Repeatedly chant the Puerta Ricans on Centre Court. Monica Puig is two breaks up in the third set against Angelique Kerber - she's very very close to winning her country's first Olympic gold. Ever. 

The Germans in the stadium aren't giving up hope, though, roaring after every point Kerber wins, trying to encourage a comeback. The problem is, she hasn't won enough points. 

Image source, .

Someone find the tape of the Puerto Rican national anthem. Puig, the first unseeded player to reach the women's final since tennis was reintroduced in 1988, is two games away...

Kerber, the leftie, is dressed in white. Puig is mostly in pink. The German serve is under serious pressure. Lose this one and the match is as good as gone. Game point, but double fault. When Puig gets the chance, she batters a volley. Break point... 

They've done it!

Great Britain - bronze medallists at London 2012 - come from behind to beat the United States 2-1 in their final group match to win Pool B.

Sophie Bray and Alex Danson with two goals in two minutes.

Now GB wait to see who they will face in the quarter-finals.

Now then, does history beckon for Puerto Rico's Monica Puig? She's a break up in the deciding set against Angelique Kerber. Puerto Rico have never won an Olympic gold medal.

Image source, Getty Images

Germany's Angelique Kerber has won the second set of the women's final against Puerto Rico's Monica Puig 6-4.

Puig, looking to win her nation's first gold medal ever, won the first set by the same margin.

We're heading for a decider.

Alex Danson scores!  

Great Britain have turned it around in this fourth quarter.

A second goal in little more than two minutes, following Sophie Bray's equaliser, means that - as it stands - they are going to be Pool B winners.

Four minutes to hold on...

Ronald McIntosh
BBC boxing commentator in Rio

That just capped off a perfect round.

It was a roundhouse right that was delivered from last week.

On his Olympic debut Joe Joyce gets the job done in clinically efficient fashion.

Ball game! Joe Joyce sends Morais to the canvas and although the man in blue gets back to his feet, the referee decides enough is enough. Joyce is through to the quarter-finals.

Oh wow. Big left from Joyce. Rubber legs from Morais...

Richie Woodhall
Former world champion on BBC Radio 5 live

Joe Joyce has just got to start working behind his jab.

He’s come out with bad intentions and we know he’s a handful.

Morais is mixing it. In fact, it's all a bit messy. No one is being shy, mind. Punches raining in from both men.

Joyce, by the way, has a degree in fine art. Bit of hugging here, Morais' arm all tangled. He's blowing hard, the man in blue.

There's the bell. Three rounds of three minutes. Joyce on the front foot, all 6ft 6in of him.

It might be a daft thing to say, but Morais is built like an outhouse. He makes bears look small. If he says it's Christmas, start singing carols. Lots of Cape Verde fans in too.