Andrew Osagie has been awarded bronze in the men's 800m after the Briton was successful in his appeal against Marcin Lewandowski, who was deemed to have stepped outside the track. The Pole has been disqualified, though he also can appeal against that decision.

Image source, Getty Images

Mutaz Essa Barshim climbs up to the stands to celebrate winning high jump gold with his camp. Russia's Ivan Ukhov is smiling and seems content with a silver medal. Ukraine's Andriy Protsenko can now call himself a world indoor bronze medallist.

A procession for Cassandra Tate on the final leg and she trots over the line to secure gold for America (3:24.83). Jamaica (3:26.54) take silver and Christine Ohuruogu does enough to ensure the Russians don't nick the bronze from Britain.

Margaret Adeoye is attempting to hunt down Francena McCorory, but the American is too sharp and Team USA are comfortably ahead. Britain fighting for silver with Jamaica.

The race has started!!

There's still a glitch preventing the women's 4x400m relay from starting so let's turn our attention on the men's high jump final where Russia's Ivan Ukhov has cleared 2.38m with his final attempt at that height. Both he and Mutaz Essa Barshim have now cleared 2.38m.

A comedy of errors in the women's 4x400m - stop, start, stop, start - and there seems to be a problem with the blocks and, eventually, they replace the Jamaicans' blocks. Hopefully the race will get under way without a hitch shortly.

The men's high jump final is producing a crackling atmosphere as Mutaz Essa Barshim has cleared 2.38m. Russia's Ivan Ukhov, currently in bronze position, has failed once at that height.

British long jump silver medallist Katarina Johnson-Thompson: "It feels incredible. I came here with no expectations. I liked to have been in the pentathlon - I can't believe I won my first senior medal in an event that's not my own.

"The long jump is my strongest event in the pentathlon. I was winning at one point, but France's Eloyse Lesueur was the best. I couldn't respond to her 6.85m. I'm still very much a pentathlete-heptathlete. The heptathlon is what I want to concentrate on in the summer. The Commonwealth Games is my main focus and hopefully I'll do the long jump or high jump at the Europeans."

Chris Daniels:, external "Tactically, he got it wrong but @andrewosagie deserves a bronze medal. Super British athlete. Fingers crossed he is upgraded!"

Katarina Johnson-Thompson is chatting to Phil Jones and shows viewers her long jump silver medal. Behind her, though, the triple jumpers are hop, skip and jumping into the sand pit. Cuba's Ernesto Reve's 17.33m is the distance to beat as the finalist prepare for their fourth attempts.

Briton Andrew Osagie, who was fourth in the 800m: "I stayed back a little bit. There were no real front-runners. I thought I had it right. In the last lap I got the wrong line. I think one of the Poles [Lewandowski] stepped on the outside of the curve. Today wasn't one of my best. I could have done better. I take a lot of heart making another final."

Three men - Mutaz Essa Barshim, Ivan Ukhov and Erik Kynard - have cleared 2.34m in the men's high jump so the competition is bubbling up nicely and unfolding as the bookmakers would have predicted. Russia's Dani Tsyplakov and Ukraine's Andriy Protsenko are still in contention, too.

Steve Cram
BBC athletics commentator in Sopot

"I like the fact Aman had a go, I like the fact Lewandowski had a go, I like the fact Kszczot had a go. It was very close in the end for bronze. Lewandowski faded, but maybe he was rewarded for going early."

Mohammed Aman (1:46.40) holds off Poland's Adam Kszczot (1:46.76) to retain his indoor title. A late surge by Andrew Osagie, but it's not enough as the Briton misses out on bronze to Marcin Lewandowski of Poland by 0.01 second.

The 800m finalists start as if they've been told a free carrot cake awaits the winner. A blistering first 100m. Andrew Osagie lurking at the back when the final bell goes.

Steve Cram
BBC athletics commentator in Sopot

"The men's 800m is a tough field because you've got Ethiopia's Mohammed Aman, the favourite in the absence of David Rudisha, and Poland's Marcin Lewandowski, who will have the home crowd on his side, and South Africa's Andre Olivier," says Steve Cram in his column this week.

"It's a really strong event but Andrew [Osagie] has been improving as the season has gone on and is capable of winning a medal."

BBC athletics pundit Paula Radcliffe: "I'd love to see Andrew Osagie come away with a medal. Andrew, maybe, has not been given the respect he deserves for his performances at major championships. He is in good shape coming into the competition. I'd like to see him believe in his abilities. Mohammed Aman is a huge, huge favourite."

The men's 800m final is the next event on the track and this race features Britain's Andrew Osagie, silver medallist in Istanbul two years ago. The athlete to keep an eye on is World Indoor and outdoor champion, Mohammed Aman.

No-one manages to vault 4.75m which means Yarisley Silva becomes the World Indoor pole vault champion thanks to a first-time clearance at 4.70m. Russia's Anzhelika Sidorova and Jirina Svobodova of the Czech Republic share silver. Britain's Holly Bleasdale finishes ninth.