Rory McIlroy finished even for the day with a triple bogey on the last hole undoing his good work during the day in the first round of the PGA Memorial Tournament on Thursday, on a hot day in Dublin, Ohio.
The Holywood man was just one shot off the lead after 17 holes having hit four birdies before the last hole.
However, that disaster on the last saw him slip back to 33rd with an opening round 72.
Offaly man Shane Lowry finished the day in a tie for third with Danny Willett, after he had five consecutive birdies, alongside Jordan Spieth and David Lipsky.
Willett, 35, who also has one PGA tour victory to his name, hit four birdies, an eagle and three bogeys to finish on three under par at Muirfield Village Golf Course.
Leader Davis Riley played the conditions well and is hoping to win his second PGA tour title, hitting just one bogey and six birdies to finish on five under.
Englishman Matt Wallace is one stroke behind leader Davis Riley.
Wallace, who has one PGA tour win, had a strong start to the tournament, hitting six birdies and two bogeys to finish the day with 68 and four under.
World number one Scottie Scheffler had his highest opening round since October 2021, finishing on two over par and seven strokes behind the lead.