Paul Dunne has work to do if he's to win back-to-back European Tour titles after defending champion Tyrrell Hatton scorched away from the pack at St Andrews heading into the final round of the Alfred Dunhill Links Championship.

Hatton opened up a five-shot lead when carding a bogey-free 65 to put him in a commanding position to defend his crown.

After opening with a 68 on the Old Course on Thursday, he followed that with a 65 at Carnoustie and matching that mark at Kingsbarns moved him to 18-under, with Frenchman Gregory Bourdy his closest challenger on minus 13.

Dunne is 11-under with former world number one Luke Donald and fellow Englishman Ross Fisher a further shot back.

The Greystones man memorably captured the British Masters last week, holding off a late Rory McIlroy surge to take the glory, and he's not out of contention yet.

Three birdies and a solitary bogey on the par-four 14th made for a good day's work, and he'll hope Hatton runs out of steam on the home straight.

Shane Lowry rallied with an brilliant 66 to lift him to seven-under, having endured a tough day yesterday when he slumped to a 75.

Graeme McDowell is two-under after his third-round 70, with Gavin Moynihan two more back alongside McIlroy, who also rallied with a four-under 68 that leaves him four-under overall.