HEXHAM, England (AP) _ Lee Westwood fought off the effects of a back injury to shoot a 2-under-par 70 Saturday and retain a three-stroke lead over Fredrik Jacobson after three rounds of the European Grand Prix.

Westwood felt a muscle pull in his back on the fourth hole after feeling a twinge during the morning. At the 11th tee, he needed minor treatment from a trainer. But that didn't stop the Englishman.

He birdied two back-nine holes without dropping any shots to take his total to 206, 10-under entering the final round. He played the front nine in level par with two birdies and two bogeys.

Jacobson, a Swede, rolled in a 25-foot birdie putt on the last hole to shoot 70 and remain second. Andrew Oldcorn of Scotland was another shot back after a 66, and Darren Clarke of Northern Ireland was at 212 following as 68.

Westwood felt stiff warming up Saturday morning. He said the flight back from hot conditions at last week's U.S. Open at Pebble Beach, where he tied for fifth _ could have contributed.

``It was on my mind from the fourth, and I wasn't really focused on my golf,'' said Westwood, who shot 68s in the first two rounds. ``The course was there for the taking today, and I'm surprised to be still three in front. I thought if I shot 70 my lead would be closed down.''

Cold winds hampered the players Friday, but Saturday was calmer and warmer.

Jacobson hoped for better than his 70, saying he had not played well much of the time on the backside.

``I can close that gap. I can shoot a good enough score to win,'' he said. ``If Lee shoots 66, 63 is a tall order. But if he shoots 69, I can shoot 65 to win it.''