Rory McIlroy moved to within three shots of leader Jordan Spieth through the first five holes of his third round at The Open on Saturday.
The four-time major winner continued his remarkable recovery at Royal Birkdale, where he was five over after the first six holes on Thursday.
On a day when Branden Grace shot the first 62 at a major, plenty of other players took advantage of favourable weather conditions to make gains.
McIlroy signalled his intent with a birdie at the first and picked up another two at the fourth and fifth to climb into strong contention for a second Claret Jug.
It moved him to four under, along with history-maker Grace and U.S. Open champion Brooks Koepka, while Spieth got to seven under courtesy of a tap-in birdie at three, leaving him one stroke ahead of Matt Kuchar.
World number one Dustin Johnson signed for a 64, meaning he sat level with reigning champion Henrik Stenson on three under.