The Open Championship isn't over. McIlroy and everyone else in contention have to believe they have a chance. But they're chasing a guy who's almost impossible to catch.

Roar, Rory, roar! Except the problem for the magnificent McIlroy masses here at the 153rd Open is that it does not seem to matter how loudly they cheer and shout and urge on their home hero.

Scottie Scheffler moved within one round of claiming the third leg of the Grand Slam on Saturday when he took a four-shot lead at Royal Portrush.