Rory McIlroy extends lead at British Open after second round of 66 . Northern Irishman leads by four shots going into weekend . Elsewhere on the course , there was no luck for big hitters Ernie Els , Bubba Watson and Lee Westwood who all missed the cut . The U.S. Ryder Cup team is in Scotland for the first time since winning it last year.
Rory McIlroy extends lead at British Open after second round of 66 . Northern Irishman leads by four shots going into weekend . The U.S. Ryder Cup team is in Scotland for the first time since winning it last year.