Sam Michael endured a pointless finish to his time as Williams technical director after the team again failed to add to its championship tally in the Singapore Grand Prix.

Pastor Maldonado ended the race as the better placed of the two Williams drivers having taken the chequered flag in eleventh place, while a gamble on making just two stops working against Rubens Barrichello as he slipped back from a points scoring position to take the flag in 13th.

That meant Williams was unable to add to its tally of just five points this season in what was Michael's final race after eleven years with the team.

"We tried a couple of different things on strategy between the two cars but today we didn't have enough pace to get into the points," he said. "Both the drivers probably got the best out of the car they could. It was a tough race but both FW33s came home with no reliability issues.

"As that was my last Grand Prix for AT&T Williams, I would like to thank everyone on the race team and at the factory for the last eleven years and to wish them all the best for a bright future."

Michael is to join McLaren as its new sporting director and it hopeful of an early release from his Williams deal to allow him to take up his new position ahead of schedule.