Trek-Segafredo's Charlie Quarterman was hospitalised after crashing with a team car during Omloop Het Nieuwsblad.
The 22-year-old was relieved to not have broken any bones but suffered a concussion and so stayed in hospital overnight to be monitored.
The Brit crashed hard into the back of another team car during the Belgian one-day race, blaming having too much lactate in his body on his failure to see the vehicle braking in front of him.
"Well that wasn’t how I was hoping this weekend would go... in a bit of pain but relieved that it’s not worse," Quarterman said afterwards, a picture of him giving a thumbs up posted from the hospital. "Think I had too much lactate in my body to see that the car in front was stopping.
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"Thank you for the messages of support already. Luckily nothing seems broken but will need to take some time off to recover from a concussion. But I’m in good hands, it’ll be alright."
This was Quarterman's first appearance at Opening Weekend in Belgium, and also the first race of his second year as a pro.
Quarterman's crash not only ruled him out of Kuurne-Brussels-Kuurne but summed up a difficult day for Trek-Segafredo, whose best-placed rider was Alex Kirsch in 63rd. Trek wasted little time in putting things right, however, with former world champion Mads Pedersen winning Kuurne-Brussels-Kuurne, powering ahead in the sprint for the line after an exemplary lead-out from team-mate Jasper Stuyven.
Trek were also present at two French one-day races over the weekend, the Faun-Ardèche Classic and Royal Bernard Drome Classic, where American Quinn Simmons was the team's highest-placed finisher on both days.
The 19-year-old has continued to court controversy after saying he didn't think he deserved to be suspended over the black hand emoji incident.
Simmons came 10th at the Faun-Ardèche Classic before managing 16th at the Royal Bernard Drome Classic.
"I think given that I am not a climber, and looking at the level of riders I was with on the climbs at the end, I think I can be happy with 10th place..." Simmons said.
