Dina Asher-Smith has withdrawn from the 200m due to a hamstring injury, ending her hopes of gold at the Tokyo 2020 Olympics.
Asher-Smith arrived at the Games as one of the favourites for sprint glory having won the 200m at the 2019 World Championships, where she also came second in the 100m.
But, unbeknown to fans, the Team GB poster girl was suffering with a substantial injury in Saturday's 100m event, and she bowed out at the semi-final stage with a third-place finish.
A tearful Asher-Smith later confirmed she suffered a hamstring tear in the build-up to Tokyo 2020 as she pulled out of Monday's 200m event.
"Obviously I'm so disappointed not to make the final because this is Tokyo 2020, it's everything I've trained for fo the past two years," the 25-year-old told BBC Sport.
"But the last few weeks of my athlete life have been absolutely insane.
"I wanted to come and be completely upfront with everybody on my form and life and just what has happened.
"I pulled out of both Stockholm and Gateshead because in the trials final, I actually pulled my hamstring at 60m, I tore it pretty bad and I was initially told in Manchester that it was a rupture and that I would require surgery and it would take three to four months to get back.
"It's been a lot to deal with because quite frankly, with that diagnosis, I just can't go to Tokyo, so we had this whole statement ready to go but then I thankfully went and got a second opinion and it was a slight misdiagnosis
"Even though there was still a tear, it wasn't a rupture, my hamstring was still attached, so we turned over every single stone to make sure I can stand on the line."
Mirror Sport columnist Sam Quek sent a rousing message of support to Asher-Smith after her heartbreaking withdrawal from Tokyo 2020.
She wrote on Twitter: "Remember Jessica Ennis devastatingly had to pull out of the Beijing 2008 #Olympics when she broke her right ankle.
"She came back to win a spectacular gold medal at London 2012. Keep your head up, Dina Asher-Smith - we will see you at #Paris2024."
Former Team GB gold-medalist Denise Lewis added: "It is devastating and no-one wants to see an athlete like Dina pull out, but she will be back and if her hamstring is bad she is making the right decision.
"It is part of your growth, understanding how you deal with that and how you come back. The pressure to pull out is always tough."
Asher-Smith, meanwhile, also spoke of her pride at running 11.05 in the 100m semi-final having faced an uphill battle even to travel to Japan for the Olympics.
"The most frustrating thing for me is that I was in really good shape, I was in the shape of my life. I can say that with my hand on my heart," said the British-record holder.
"If you would have asked me six weeks ago I was very confident I was going to win this, being completely frank.
"Because every part of my race, my start, my transition and my finish was better than some of the fastest women in the world.
"But you know when you get a hurdle like that everything rejigs, I had the low of being told I possibly wouldn't be here and then getting the 'oh there is a chance'.
"It has been a journey and I am honestly so proud to run 11.0 off a week's worth of sprint training because I spent a month trying to run again.
"I am going to pull out, and that is the one as reigning world champion and I was in such good shape you know that Olympic champion isn't that much of a further step.
"I am really proud to be able to execute my races to this point, but when you are talking about the standard that I want to be at, there is plenty more championships for me to come and kill.
"We are in the middle of a four-to-five year cycle and I got a hamstring tear at a really inconvenient time but it doesn't change the calibre of the athlete that I am.
"And I know that if I want to showcase that I just need a few more weeks of power training a bit more speed endurance to fill that gap of when I was trying to walk again."