Sir Bradley Wiggins finished 81st in the first stage of the Tour of Qatar, 33 seconds behind Jose Joaquin Rojas who took the race leader's jersey.
Spaniard Rojas edged out Belgian Tom Boonen in a sprint with Frenchman Arnaud Demare third on the 136km stage from Dukhan to Sealine Beach.
Olympic time trial champion Wiggins was dropped with around 5km to go.
The Briton is using the six-stage race as part of his preparations for the Paris-Roubaix one-day classic in April.
Wiggins will then leave Team Sky at the end of April to focus his attention on track racing as part of his bid to qualify for the Rio 2016 Olympics.
Wiggins' team-mates and compatriots Luke Rowe and Ian Stannard finished in the main bunch behind Rojas but are 10 seconds back in the standings because the Spaniard picked up a 10-second time bonus for wining the stage.
Monday's second stage runs 194km from Al Wakra to Al Khor Corniche.