When Patrick Reed stretched his lead to fives shots on the back nine of his third round at the Masters, it felt like Sunday might be nothing more than a victory procession.
However, a bogey from the American on 16 followed by a birdie from Rory McIlroy on his final hole of the day ensured today's final round should be an intriguing battle.
The two tee-off together tonight with Reed holding a three-shot lead.
"It's massive to be in the final group for the first time here since 2011. I feel like I learned an awful lot that day and hopefully I can put that into practice tomorrow," McIlroy is quoted as saying by Golf.com.
McIlroy then piled all the pressure on the leader.
I'm really excited to show everyone what I've got, to show Patrick Reed what I've got and all the pressure is on him. He went to Augusta State and has a lot of support and I'm hoping to come in here and spoil the party.
I feel like all the pressure is on him. He's got to go out and protect that, and he's got a few guys chasing him that are pretty big‑time players. He's got that to deal with and sleep on tonight.
I feel like I can go out there and play like I've got nothing to lose.
The two previously faced off in the 2016 Ryder Cup, which was won by the US, with Reed defeating McIlroy in the final day's singles matches.