Kosgei joins Sifan Hassan in one-hour event and Kipyegon eyes 1000m mark, while triathlon is cancelled as Nafissatou Thiam withdraws

Brigid Kosgei is set to make her serious track debut at the AG Memorial Van Damme Diamond League meeting in Brussels on September 4, when she will join Sifan Hassan in attacking the one-hour world record.

Netherlands’ Hassan was announced for the event earlier this month, with the world 1500m and 10,000m champion targeting Dire Tune’s 2008 mark of 18,517km.

Now world marathon record-holder Kosgei has been added to the field as she works toward the defence of her title at the elite-only Virgin Money London Marathon on October 4.

According to her World Athletics profile, the Brussels meeting will be Kosgei’s first serious track event, with only road performances – including her incredible 2:14:04 marathon in Chicago last October – listed so far.

The 26-year-old has a half-marathon PB of 64:28 which she set when winning the Great North Run last year. Although that course is not record-eligible, Kosgei’s performance there is the fastest ever half-marathon time run by a woman.

The Kenyan’s best time for 15km is 48:54.

The meeting will also include a men’s one-hour event, with Britain’s four-time Olympic champion Mo Farah among those targeting Haile Gebrselassie’s 21,285km mark.

He will be joined by his training partner Bashir Abdi of Belgium and Norway’s Sondre Nordstad Moen.

Meanwhile, Kenya’s Olympic 1500m champion Faith Kipyegon will aim to break the world 1000m record of 2:28.98 – a mark she missed by just 17 hundredths of a second in Monaco – when she lines up at the AG Memorial Van Damme.

The women’s 1000m replaces the 4x400m mixed relay event which had originally been planned, with the Borlée brothers having decided to end their season due to “slight injuries”.

Another change to the programme is the cancellation of the triathlon which had been set to see Belgium’s Olympic heptathlon champion Nafissatou Thiam and Britain’s world gold medallist Katarina Johnson-Thompson go head-to-head in the 100m hurdles, shot put and high jump.

Thiam has withdrawn from the meeting due to injury and Johnson-Thompson will now contest just the hurdles and high jump.

According to organisers, Thiam is suffering “continuous pain at the Achilles tendons and does not want to take any risk”.

The triathlon shot put will be replaced by a women’s 100m, while Brazil’s Olympic champion Thiago Braz has been added to the pole vault field alongside world record-holder Mondo Duplantis of Sweden.

Organisers had initially hoped to be able to welcome around 9000 spectators “in a safe and secure way” but the event is now set to take place behind closed doors.