Jason Day is well-placed to break his major drought when the final round begins at the British Open later this evening.

Day is one of the three players in a tie for the lead at 12 under following a five under 67 on Sunday.

Sharing the lead with Day is South African Louis Oosthuizen and Irish amateur Paul Dunne.

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Day tees off in his final round at 11.20pm (AEST) and has been paired with American Jordan Spieth – winner of both the US Masters and the US Open this year.

The 27-year-old Day has finished in the top 10 at seven majors and has been runner-up on three occasions.

He was in contention at the US Open last month despite suffering vertigo and collapsing. Day eventually finished in a tie for ninth.

Spieth is just one shot behind the leaders in outright fourth and Day said he deserves to be the clear favourite.

“He’s a heavy favourite tomorrow, just being one shot back,” he said.

“Everyone knows it. I can’t control what he does. He’s just playing phenomenal golf.

“If you look at the run that he’s had this year, it’s been amazing.

“I’m definitely going to try and fly under the radar, but it’s hard to when you’re in the last two groups of the championship playing the last round.

“I will try not to get so absorbed and attached to the leaderboard, and pretty much what I did today, just to really stay patient and let the birdies come to you.”

Day is not the only Aussie hoping to become our first Open champion since Greg Norman in 1993 though.

Marc Leishman’s stunning eight under 64 on Sunday leaves him in a tie for sixth at nine under and within striking distance of the leaders.

Leishman will tee off just 10 minutes before Day and Spieth and plays with Irishman Padraig Harrington in his final round.

Adam Scott is also one of the nine players locked at nine under. He will tee off at 10.40pm with American Robert Streb.

Steven Bowditch (eight under) and Greg Chalmers and Matt Jones (both six under) also remain in contention.

And Geoff Ogilvy and Marcus Fraser (both five under) could feature at the top of the leaderboard if they finish strongly.