World Championships: Reece Prescod wins at British trials as Christine Ohuruogu exits

British Athletics selectors face a World Championship dilemma after Reece Prescod and James Dasaolu secured 100m places at the team trials.

Prescod's win, edging out Dasaolu by 0.02 seconds with 10.09, means Chijindu Ujah or Adam Gemili will miss out when three picks are announced on 11 July.

Asha Philip won the women's 100m in 11.21, with Dina Asher-Smith sixth and now a doubt for August's championships.

Ex-Olympic champion Christine Ohuruogu was eliminated in the 400m heats.

'A little bit of a headache' - Cram

"I really like Prescod. He's a huge character and he has that talent," said BBC Sport commentator Steve Cram

Ohuruogu's failure was the first moment of drama on a day where guaranteed places were up for grabs at London's World Championships, beginning on 4 August.

To secure their place, athletes had to finish in the top two in the final of their discipline and must have also achieved a qualifying time.

Dasaolu, 29, and Prescod, 21, both already had the necessary time but the latter burst through in the closing 40 metres of the final to take the biggest win of his career.

"I can't believe it," said Prescod. "It's such a blessing. I can't describe how happy I am. The last year has been a real struggle for me but now I can focus on the World Championships."

Ujah withdrew from the final with cramp, meaning either he, Gemili or Nethaneel Mitchell-Blake - who all hold the qualifying time - will need the nod from selectors to be part of Britain's 100m team.

Ujah is the third-fastest sprinter in British history, Mitchell-Blake has the quickest time of 2017 and Gemili has major championship experience, including a fourth-place finish in the 200m at the 2016 Olympic Games.

"Ujah went flat out in the semi-final which he didn't need to do," said BBC Sport pundit Colin Jackson. "Let's hope it's not serious for him."

Commentator Steve Cram added: "That leaves the selectors with a little bit of a headache, who are they going to have to fill that third spot?"

A World Championship miss...

Pundit Alison Curbishley reflected as 2007 and 2013 world champion Ohuruogu struggled

Two-time world champion Ohuruogu boasts the quickest 400m time in British history, set in 2013, but she was third in her heat and will not contest Sunday's final.

Afterwards, the 33-year-old said she would be available for the 4x400m relay at the World Championships if needed but her time at Birmingham's Alexander Stadium was only 13th fastest across the four heats.

She could run the World Championship qualifying time in the next week but her best effort in 2017 is outside the top 10 in the country and it therefore looks highly likely she will miss out.

Perri Shakes-Drayton, who has raced just eight times since damaging her knee at the 2013 World Championships, impressed in the 400m heats, winning in 53.02.

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• World Championships Team Trials - BBC TV times and event highlights

'The London dream is back alive'

Asher-Smith - European champion and the fastest British female sprinter of all time - raced outdoors for the first time this year having recently recovered from a broken foot.

But she was left trailing as Philip won her fourth British title, benefiting from a good start to hold off 20-year-old Daryll Neita, who clocked 11.25 despite being slow from the blocks.

The pair are both guaranteed a place at the Worlds, while Asher-Smith, who was visibly emotional after the race, will now likely focus on the 200m.

The 21-year-old said: "I have been training for three weeks so I am so happy - everyone said I was not going to be able to run at all in 2017 but I thought, I just can't let that happen because it is a World Championships. The London dream is definitely back alive."

BBC 5 live pundit Darren Campbell said: "The third spot selectors can keep open. The fastest 100m runner out of our women this year is Desiree Henry and she has not competed in this race and has already got the qualifying time. I don't think they can justify picking Dina Asher-Smith."

Who else is going to London?

Mo Farah and Morgan Lake will be at the World Championships

Mo Farah - who will seek to defend his 5,000m and 10,000m titles in London - and long jumper Greg Rutherford will be part of the British team courtesy of their status as world champions.

Farah will be joined by Andrew Butchart in the 5,000m after the Scot secured a win in Birmingham, where 20-year-old Morgan Lake produced a lifetime best mark of 1.96m in the high jump to qualify.

Laura Muir is already assured of a place having won the overall 1500m Diamond League title last year, while Katarina Johnson-Thompson has already reached the heptathlon qualifying mark, as has Ashley Bryant in the decathlon.

Steeplechaser Rob Mullett won his third British title ahead of Zak Seddon as both men made the team.

European indoor champion Andrew Pozzi - who was exempted from the trials - was instead competing in the 110m hurdles at the Diamond League meeting in Paris on Saturday night and set a new personal best of 13.14 seconds to claim second place.