paul casey

Will Louis Oosthuizen's unexpected run at St. Andrews end with a title or can Paul Casey become England's first winner since 1992?

Farrell Evans is blogging all the final-round action.

Paul Casey challenged, but Louis Oosthuizen continued his run atop the British Open leaderboard. The South African shot a 69 and will take a four-shot lead heading into the final round.

South Africa's Louis Oosthuizen leads England's Paul Casey by four shots going into the final round at St Andrews.

Paul Casey of England, the world's No. 3 player, withdrew from the PGA Championship because of a rib injury.

Casey, a three-time winner this year on the PGA and European tours, first injured strained the rib muscle a week before the British Open.

He has tried to let it heal with rest and treatment, but had to withdraw early in the first round a week ago at Firestone.