Manchester United took a slender lead in their UEFA Champions League quarter-final with Chelsea as Wayne Rooney scored the only goal of the first leg at Stamford Bridge. Rooney’s foul-mouthed celebration after scoring a hat-trick at West Ham on Saturday may have landed him in hot water with the Football Association but he carried on his fine form against Chelsea with an away goal for United to take back to Old Trafford for the return match The crucial moment arrived midway through the first half when Ryan Giggs superbly controlled a long pass from Michael Carrick and cut the ball back for Rooney to slide home a composed finish that went in off the post. Chelsea almost equalised on the stroke of half-time as Fernando Torres guided an effort against the post and Frank Lampard’s volley on the rebound was cleared off the line by Patrice Evra. Torres went close again in the second half but still could not open his account for the Blues as Edwin van der Sar pulled off a magnificent acrobatic save to claw out his well-placed header. United had to withstand spells of Chelsea pressure, particularly in the closing stages, when confident penalty appeals for a foul on Ramires by Evra were waved away, but were largely comfortable in keeping them at bay and occasionally threatened on the counter-attack. United then breathed a sigh of relief in stoppage time when Evra sent Ramires tumbling but referee Alberto Mallenco failed to award what seemed to be a clear penalty. There was still time for a Torres yellow card for diving under Valencia’s challenge, ending yet another unhappy night for the Spain star.