The main athletics track for the Rio 2016 Olympics has now been laid by Mondo following a series of delays, and everything is on target to meet the deadline of a test event due to be held from May 14 to 16.

Installation of the Mondo athletics track in the Olympic Stadium for Rio 2016, delayed for more than a month following local hold-ups in preparation and unusually bad weather, is now underway – and just on target for completion in time for the test event next month. 

Jamaican sprint king Usain Bolt has claimed Rio 2016 will "definitely" be his last Olympic appearance, seemingly quashing any chance of him competing at Tokyo 2020.

USA Track and Field (USATF) has announced it has signed a Memorandum of Understanding (MoU) with its Athletes Advisory Committee concerning its new revenue distribution plan, which is set to deliver an additional $9 million (£5.9 million/€8 million) to athletes over the next five years.

So what the Chinese media questioner wanted to know of Su Bingtian, the morning after the night before, when he had become the first Asian to contest a men’s 100m final at the World Championships, was this:

Usain Bolt and his fellow members of Jamaica’s victorious men’s 4x100 meres relay team were presented with their medals here by Donna Prather Williams, granddaughter of the late and legendary four-times Olympic champion Jesse Owens.

The storm which had turned the track into a stream two hours before the final session of the 15th International Association of Athletics World Championships may have passed, but electricity remained in the Bird’s Nest stadium tonight as Chinese athletes, perhaps inspired by the unlikely silver earned by their men’s 4x100 metres sprinters the previous night, added two more of the same colour.

Sebastian Coe, President elect of the International Association of Athletics Federations (IAAF), once again defended his sport against charges of widespread doping here at the final press conference jointly held with Chinese organisers of the World Championships. 

On a night when Ashton Eaton of the United States beat his own world decathlon record with a score of 9,045 points, and Britain’s Mo Farah collected a seventh consecutive global title, Usain Bolt secured an 11th World Athletics Championships gold by anchoring Jamaica to victory in the men’s 4x100 metres relay.

Matej Toth, winner of the men’s 50 kilometres race walking world title here today in 3 hours 40min 32sec, said afterwards he will not compete at next year’s World Race Walking Cup in Cheboksary because of the doping scandal involving many Russian walkers coached by the now suspended Viktor Chegin.

Two years ago, Russia concluded the Moscow International Association of Athletics Federations (IAAF) World Championships in second place behind the United States, but with more golds - seven to six. Two years on, as the 15th World Championships here move into their final day, late golds by Sergey Shubenkov in the 110 metres hurdles and Mariya Kuchina in the women’s high jump have rescued the Russian cause from humiliation.

On the day when Liu Hong duly delivered the host nation its first gold of the World Athletics Championships in today’s women’s 20 kilometres race walk, with team-mate Xiuzhi Lu adding silver, Dafne Schippers of The Netherlands became the first European winner of the world 200 metres title since 2003.

The event officially opened here last Saturday by the Chinese President was not just the International Association of Athletics Federations’ World Championships – it was self-styled as the Green Championships, with concern for the environment being one of its key elements.

South Africa’s Wayde Van Niekerk had to be taken to hospital here last night after winning the world 400 metres title in 43.48sec, the fastest time run since 2007.

Two female Kenyan athletes - 400 metres runner Joyce Zakary and 400m hurdler Francisca Koki Manunga - have been suspended following positive doping tests here at the International Association of Athletics Federations World Championships.