Scottie Scheffler moved within one round of claiming the third leg of the Grand Slam on Saturday when he shot a 4-under 67 in the British Open for a four-shot lead.

Scottie Scheffler shot a 4-under 67 at Royal Portrush Golf Club to improve to 14-under 199 – his lowest 54-hole total at a major

After three rounds, the American is closing in on his fourth major with a bogey-free 67 to claim a four-shot lead at Royal Portrush.

Scottie Scheffler was a heavy favorite (-190) with a one-shot lead through two rounds of The Open. And now, with a four-shot advantage and 18 holes to play? He’s -750. Home favorite Rory McIlroy has the second lowest betting odds at +2200. Here’s a look at more odds, courtesy DraftKings, entering the final round in Portrush, Northern Ireland.

World number one Scheffler maintains iron grip on British Open * McIlroy makes big move with sizzling 66 * China's Li in second place, four shots back By Martyn Herman PORTRUSH, Northern Ireland, July

Relentless Open Championship leader Scottie Scheffler kept his head as others around him were losing theirs on Saturday - but while his main rivals fell away, the spectre of Northern Ireland’s Rory McIlroy loomed in the Royal Portrush distance.

Follow live as golf’s oldest major begins at Royal Portrush in Northern Ireland with all eyes on local star Rory McIlroy

Scottie Scheffler is the No. 1 golfer in the world, but even he doesn't really understand the fuss. Just two days before the year's final major tees off, Scheffler admitted he doesn't understand "the point" of becoming the best golfer in the world - or an elite professional in any sport,