Live commentary from Crystal Palace
Welcome to the Aviva Grand Prix from Crystal Palace with News Shopper's Mark Edwards.
5.33pm Well, that's it. There's no question who the star of the show was. Bolt has proved he continues to set new standards for sprinting.
Michael Bingham's 400m victory must also rank high as well as Carmelita Jeter's personal best in the Women's 100m.
Hope you've enjoyed it and it certainly whets the appetite for Berlin next month. Goodbye from Crystal Palace.
5.31pmUnsurprisingly, given the whole meet revolves around him, it seems to have been decided the Jamaican victory stands.
Controversy! There's talk Jamaica, and in particular Bolt, has been disqualified for stepping over the line in the last changeover.
5.29pm Bolt, as usual, is surrounded by photographers.
Bolt and Jamaica power home 30 metres ahead of the US team in second. Vine is telling us it's the fouth fastest time in history. The changes were smooth and Bolt really flew.
5.24pm Great Britain and Northern Ireland get a false start in Lane 6.
5.20pm Bolt is showboating already. He's pulling muscle man poses and kissing his biceps.
5.15pm Bolt is in the stadium. Met with huge applause, of course. The 100m relay is moments away.
5.05pm Talking of Bolt, or at least his fashion, the great man will be here in a moment for the 100m realy. Stay tuned.
5.01pm Sturrup got a great start, staying low for so long, but Jeter really motored after 50m in what David Vine descibes as a "Bolt-like fashion" to win it by a good distance. 10.93secs the time.
So Many false starts today. Another one here. Tomlinson's last jump doesn't improve on his best. The title is Phillips'.
4.57pm The Women's 100m final. Jeter? Durst? Baptiste? It's anyone's race.
4.50pm Lolo Jones from the US was the fastest on paper but in a very close race but she's edged into third in a photo finish. Australia's Sarah McLellan gets it in 12.65.
Claxton gets a yellow for a false start.
4.45pm The Women's 100m Hurdles. GB's Sarah Claxton is in lane 1.
4.38pm Fantastic race. Four or five runners were in with a shout up until the last 10 metres, but it was GB's Michael Bingham in a personal best of 45.03secs who pips Taylor on the line. Rooney finishes in fifth.
Double Olympic gold medallist Angelo Taylor from the US is favourite for the race. Rooney was sixth in Beijing but he is thought to be coming back into form. This should be quick.
4.34 The Men's 400m is ready to go. Local boy Martyn Rooney has been warming up in a Crystal Palace FC shirt.
4.30pm Tomlinson gives it everything but it's a bit ragged and of no use at 7m93.
4.26pm Phillips hits back straight away with 8m33.
4.21pm GB's Greg Rutherford jumps a season's best 8m06 for a second place. This event is hotting up. Tomlinson follows with what looks like an 8 metre-plus jump. Wow! 8m21 - he takes the lead.
4.15pm Phillips motors down the long jump run-up like an express train and lands so perfectly in the sand it's like a gymnast's dismount. All that and he gets 8m14 which puts him well in the lead.
Tomlinson's first jump is 7.94. It puts him into third. He swings his arms in disappointment.
4.10pm The competitors are lining up for the Women's 5000m, including US Champion Katie McGregor.
A surprisingly tiny Kelly Holmes walks past up here in the media center, arm-in-arm with Tessa Sanderson.
3.04pm The Men's Long Jump is about to start. Tomlinson has tough opposition from the US's Dwight Phillips, a former Olympic and World Champion.
Walker glides past the rest of the field to set the best time in the world this year.
4pm The Women's 400m Hurdles is about to start, featuring Melaine Walker from Jamaica, the Olympic champion.
3.57pm Samson Oni is out of the high jump with three failures at 2m24. Stay away from the clippers, Samson.
3.49pm Hooker's just failed his third attempt at 5m84. He's out, but takes the top spot.
3.42 The athletes are out for the Men's Long Jump. Among them GB number one Chris Tomlinson.
3.40 The pole vault bar has gone up to 5m 84m. Hooker is leading way to the hallowed six metre mark.
3.37pm GB athlete Helen Clitheroe is delighted with her fourth place in the Women's 3000m Steeplechase in a time of 9mins and 34secs. It's a season's best and she has qualified for Berlin.
3.25pm The Men's High Jump, which includes GB's Samson Omi, who, fans of personal facts about News Shopper journalists will be delighted to hear, trains at my gym. I'm a bit worried, though, given his name, that he has very short hair. Hasn't he read the Good Book. He could be so much stronger. Anyway, go Samson!
3.22pm Portugal's Naide Gomes won the long jump with a best of 6.99m.
3.18pm Gay has been complaining of an injury in his post race interviews. Apparently, a tight groin tempered his warm up for the race. I, with the expert knowledge you would expect, thought he looked in good shape. He still believes he is the "only one" who can beat Bolt, though. He's still being coy over whether he will double up over the 100m and 200m in Berlin.
Nerius is leading the javelin after the first round of throws.
3.10pm The Women's Javelin is starting. I guess that's why Tessa is here. Olympic silver medallist Germany's Steffi Nerius should be one of the favourites.
3.05The tall, strong Clement leads all the way with a powerful first 300m. Jackson got close in the end. Greene disappointed with a sixth place.
3pm Men's 400m Hurdles with three former world champions involved. Felix Sanchez of the Dominican Republic and Bershawn Jackson, the fastest man in the world this year, and Kebron Clement from the US. British Champion David Greene also runs.
Close race. Strong finish from Alyson Felix of the US but I think Sturrup held her off. No, Felix pipped her. Really strong finish. Baptiste got third.
Olympic Javelin gold medallist Tessa Sanderson is sat right behind me, right now. She looks great.
The second heat features two Caribbean greats, the Bahamas' Chandra Sturrup and Kelly Ann Baptiste, from Trinidad.
2.40 Maduaka looked like she got a flyer, having already had a false start, but Jeter takes over after 50m. She motors home well clear of the rest.
The Women's 100m first heat is ready to go, featuring British champion Joice Maduaka and US champion Carmelita Jeter.
2.35 Jimoh from the US is second in the long jump with 6m80cm.
2.30pm Petrana Lebedeva from the Ukraine takes the lead in the long jump.
Tyson Gay storms it in a time of 20 seconds dead. He coasted from 30 metres out after a ferocious start and bend. He looks in cracking form. It bodes well for the the showdown between him and Bolt in the World Championships in Berlin next month. Devonish came in in fifth.
2.20pm The men's 200m is coming up with fastest man in the world this year Tyson Gay and Team GB's Marlon Devonish. The conditions are good.
2.15pm Men's Pole Vault, including Aussie Steve Hooker, the Olympic gold medallist and a member of the exclusive six metre club, and World Champion Brad Walker from the US.
Crates is edged into third place after a spirited run.
And they're off, despite some fussing from the starter who sounds disconcertingly like Pam Ayres. She doesn't make her instructions rhyme, though, thankfully.
2.10pm Veteran British Paralympian Danny Crates, gold medallist in the Athens Paralympics, is all set for his farewell 800m in front of his home crowd.
2.05pm The Women's Long Jump has begun. Strong field.
"Lightning" John has still got it, just holding off Iwan Thomas in the last few metres.
1.50pm A special relay event has started full of former sports stars, including John Regis, who is more built for comfort than speed these days, on the anchor leg and TV legends such as some lady off Sky News.
1.20pm The first big event of the day, the Men's 200m starts at 2.20pm. Gay seems to be returning to his best form after a string of injuries which hampered his performances in Beijing. Should be good.
Saturday, July 25, 1.10pm. Well, you might have noticed we had some technical problems, and just before the night's main event, the men's 100m final. Typical.
Anyway, I think they've been resolved and I hope I can give you uninterrupted commentary on today's events which include the already legendary Usain Bolt running for Jamaica in the Men's 100m Relay, and Tyson Gay, the only man to have run faster than Bolt over 100m this year, in the 200m.
Just in case you haven't heard, Bolt stepped up in the 100m final after looking a little rusty in the heats, running away from the rest in a time of 9.91 seconds. Not bad considering there was a pretty fierce head wind.
No other runner broke 10 seconds. Team GB's number one, Simeon Williamson, continued his good run of recent form with a 10.18 secs fourth place. Asafa Powell, after looking threatening in the heats, again went missing when the heat was on. He was down in sixth.
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