Geraint Thomas has withdrawn from the Volta a Catalunya following the fourth stage of the race in Spain.
The Team Sky rider had fallen to 53rd after the 172km Baga to Port Aine stage, having been in 10th place overnight.
Welshman Thomas, 28, said that he was still feeling the effects of his recent win in the Paris-Nice race.
“Never good pulling out of a race but not been 100% since last week,” he said on Twitter.
Thomas had finished Wednesday’s stage, which featured a mountain-top finish, 14 minutes and 33 seconds behind winner Thomas De Gendt of Belgium.
The previous day’s stage finished with Thomas 28 seconds behind leader Dan Martin, but after the climb to Port Aine he was 13 mins 40 seconds adrift of the lead.
Colombia’s Nairo Quintana now heads the race, eight seconds ahead of Spain’s Alberto Contador with three stages remaining.
Two-time Tour de France winner Chris Froome, Thomas’ Team Sky colleague, is 46 seconds back and eighth overall.