Great Britain's Jazz Carlin has two silver Olympic medals after just finishing second in the women's 800m freestyle to go with the 400m freestyle silver she won on Saturday.

She has been talking to BBC Sport and said: "I couldn't do it without my family. They have been there through the tough times and it is nice that they can be here.

"Two silver medals, it is an incredible feeling. I'm finally believing in myself and stick to the race plan. I need to go on holiday somewhere. I'm just going to have some time away from the pool." 

From one extreme of lengths to another - it's the men's 50m free.

Katie Ledecky won her race by 12 seconds. This one will only last 20-odd.

Ben Proud goes for GB. 

Day one of the heptathlon closes with the standings looking rather familiar - defending champion Jess Ennis-Hill sits at the top, 72 points ahead of Belgium's Nafissatou Thiam.

Katarina Johnson-Thompson is in fourth, 100 points adrift of Ennis-Hill.

The long jump, javelin and 800m to finish us off tomorrow.

Ali Mason: Swimming in the wrong era Jazz. Eight years either side and you're an odds on Olympic champion.

Can Shelly-Ann Fraser-Pryce do it yet again?

The Jamaican won the 100m in 2008 and 2012 but has had an injury-plagued season and is stuck out in lane nine for her run in the fourth heat tonight (heats start from 02:40 BST).

Fellow Jamaican Elaine Thompson is the fastest woman in the world this year, with the magnificentally named English Gardner of the US second. 

Image source, AP

Rebecca Adlington
Double Olympic gold-medal winning swimmer on BBC One

Katie Ledecky was 12 seconds ahead of everyone else in the field, it was just incredible.

Jazz got second and I'm so pleased for her.

Katie Ledecky has become only the second woman to sweep the 200, 400 and 800-metre freestyles. 

Here's how Great Britain's Greg Rutherford made it through to the men's long jump final after finishing 10th in qualifying.

Adrian Moorhouse
1988 Olympic 100m breaststroke champion on BBC TV

Jazz Carlin did everything right and I'm so pleased for her. Two silvers against the great Katie Ledecky.

Ledecky is one of the greatest swimmers I have seen.

It's a British one-two in heat four of the heptathlon 200m.

Katarina Johnson-Thompson crosses first in 23.27 seconds, which is a bit off her personal best.

Jess Ennis-Hill grits her teeth and clings on to Katarina's coat tails to come in second in 23.49.

Let's see what that does to the rankings.

Joseph Schooling teaches everyone a lesson as he wins gold and Singapore's first ever Olympic gold and even sets a new Olympic record of 50.39.

So, so close!

Big favourite Katinka Hosszu of Hungary cannot quite hang on and is caught in the final few meters by USA's Maya Dirado who takes gold!

It is by only six hundredths of a second.

Hillary Caldwell of Canada takes bronze.

Top swim! Jazz Carlin takes silver for GB. That was all they were swimming for. 

Here we go - heat four in the 200m and off go GB's Katarina Johnson-Thompson - lane six - and Jessica Ennis-Hill - lane three - to decide where they stand ahead of tomorrow's last three events.

Great Britain's Martyn Rooney missed out on reaching the men's 400m semi-finals and he has just posted the following message on Twitter.

The world record has taken a savage beating in the pool tonight...

Katie Ledecky is gone, gone, gone.

Jazz Carlin is just in third place at the moment. Three lengths to go!