Summary
Women's 200m final: 1 Thompson, 2 Schippers, 3 Bowie, 5 Asher-Smith
Men's 200m semis: Gatlin fails to make final; Bolt wins his semi in 19.78
GB's Gemili through to Thursday's final
GB's Cindy Ofili fourth and sister Tiffany Porter seventh in 100m hurdles final
Hockey: GB women beat New Zealand 3-0 to reach final
Sailing: Clark & Mills' bid to seal women's 470 gold postponed
Football: Neymar scores as Brazil make men's final
Live Reporting
Tom Rostance
Postpublished at 19:50 British Summer Time 17 August 2016
World asks just how the Brits do itpublished at 19:48
19:48The media in a number of countries have been asking what lies behind the success rate of British athletes at the Rio Olympics. The large number of medals won by the cyclists of Team GB has come in for particular attention.
The Sydney Morning Herald, external said that when Cycling Australia boss Kevin Tabotta was asked what made British cycling so good, he replied: "If I had the blueprint, I'd be using it myself."
An article on Sina's Weibo, external, the popular Chinese microblogging platform, also wonders what the UK's "secret" is, noting that direct funding from the National Lottery was "allocated to sports management and research institutions" for "a 'world-class project'".
French ex-cyclist, ex-coach and now columnist Antoine Vayer has been posting a number of provocative tweets aimed at British cyclists, with the latest simply stating: "£ycling".
Read more here.
get involved Get Involvedpublished at 19:47 British Summer Time 17 August 2016
19:47 BST 17 August 2016#bbcrio2016
Pick your eventpublished at 19:45
19:45Plenty going on in another busy day in Rio (except sailing). Boxing, diving, taekwondo and wrestling (lots of combat sports). Whatever you want to watch, you'll find it all here.
sailing Doubts sailing will start todaypublished at 19:41 British Summer Time 17 August 2016
19:41 BST 17 August 2016470 medal races
Alistair Magowan
BBC Sport in RioWith no wind forthcoming and the 470 crews still lying idle, our boat driver Sergio takes us to the entrance of Guanabara Bay to check the wind speed.
Under the gaze of Sugar Loaf Mountain close to the abandoned Lage Fort, Shirley Robertson takes out the wind speed meter and it reads five knots, but it's lighter in the Bay where racing is set to take place.
Organisers have until 20:30 BST to make a decision on whether to race and if there's still no wind, they will come back for the medal race tomorrow.
Sergio isn't too optimistic and he knows this Bay well.
hockey Postpublished at 19:40
19:40As Stuart Broad rightly points out, Great Britain's women go in the semi-final of the hockey tonight, meeting New Zealand at 21:00. The Netherlands are already through to the final after winning a penalty competition against Germany, despite this incredible finish by Janna Muller-Wieland.
Postpublished at 19:38 British Summer Time 17 August 2016
19:38 BST 17 August 2016golf Golfpublished at 19:38
19:38Women's individual stroke play
"Is it in?!" Lydia Ko - AKA the world number one - half-heartedly high-fives her caddy as a huge roar comes up from the back of the 15th green.
The New Zealander doesn't quite believe her 140-odd yard approach has just disappeared down the drain for an eagle. It has! She smiles, she moves on to two-under.
football Footballpublished at 19:37
19:37A little earlier on, Brazil exorcised some semi-final demons (sort of) by sticking six past Honduras. Nigeria or Germany will await in the final. You can watch all of the goals right here.
diving Divingpublished at 19:36
19:36Women's 10m platform preliminary
We're in the very early stages of the women's 10m platform preliminary and it's a steady start for Great Britain's Sarah Barrow. She is joint 12th with 67.20 points after round one, while her compatriot Tonia Couch has opened her campaign with 54.00 and is 25th.
Long way to go.
bmx Work to do...published at 19:35 British Summer Time 17 August 2016
19:35 BST 17 August 2016Luke Reddy
BBC Sport in RioLiam Phillips sits on his bike, shoulders rising and falling with the deep breaths needed after that blitz. A quick water on board and you can tell he's contemplating.
The Briton will have expected more. The damage of course is not terminal, the knockout stages will define success or failure, but he's made life a little trickier for himself.
Postpublished at 19:34 British Summer Time 17 August 2016
19:34 BST 17 August 2016boxing Boxingpublished at 19:34 British Summer Time 17 August 2016
19:34 BST 17 August 2016Ronald McIntosh
BBC boxing commentator in RioThis has very much been a road to redemption for Savannah Marshall.
It was not the result that she would have wanted but the manner of her performance has been very impressive indeed.
She has laid to rest the result of London 2012 when she didn't perform as she would have liked.
boxing Boxingpublished at 19:33
19:33Women's middleweight
The blue corner has it, Nouchka Fontijn goes through via a split decision. Savannah Marshall gave it plenty and gave her good account of herself, but it was not enough to defeat the number two seed.
boxing Boxingpublished at 19:32 British Summer Time 17 August 2016
19:32 BST 17 August 2016Women's middleweight
Savannah Marshall raises her arms, but it isn't likely to be her night.
boxing Boxingpublished at 19:32
19:32Women's middleweight
I wouldn't fancy Fontijn if this went another round or two, but she looks likely to get through. Marshall still throwing punches at the bell.
bmx BMXpublished at 19:31 British Summer Time 17 August 2016
19:31 BST 17 August 2016Liam Phillips out next for Great Britain, winner of the BMX World Cup in 2014 and 2015. What can he produce?
Well, not what he would have hoped, 35.095 leaves him in ninth place. Plenty of time to improve though.
boxing Boxingpublished at 19:31 British Summer Time 17 August 2016
19:31 BST 17 August 2016Women's middleweight
Marshall is swinging for the fences here. She needs to force a stoppage. One minute to go...
boxing Boxingpublished at 19:30 British Summer Time 17 August 2016
19:30 BST 17 August 2016Women's middleweight
Third round unanimously to Fontijn. Marshall needs something special in the final stanza.
golf Golfpublished at 19:29
19:29Women's individual stroke play
Budge up Inbee Park, you have company. Thailand's Ariya Jutanugarn, the world number two, joins the South Korean at the top of the leaderboard. Jutanugarn cans a birdie putt on the 14th to also move on to five-under.