Louis Oosthuizen poised to take Open?

Question

The South African enters the fourth day at St Andrews leading by four strokes, but Paul Casey is the man chasing him down - although Lee Westwood is still in with a shout of landing his first major too. And what about that Jimenez...

http://blogs.bettor.com/Oosthuizen-four-ahead-as-Open-nears-climax-a17243