The 2019 Open champion returns to action for his second round later today.
Shane Lowry is set to miss the cut at after his opening round at the Wells Fargo Championship.
The Clara man registered three bogeys, a double bogey with a single birdie on the second hole to finish with a round of 75.
Rory McIlroy carded an opening round of four under par 67 to lie three shots off the lead.
Seamus Power endured a nightmare finish as he played the last three holes in five over par to end the day on one over.
Xander Schauffele leads the way in Charlotte on five under.
Full Interview: Portarlington Footballer Ronan Coffey
Full Interview: The Down's Manager Dermot Power
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Ronan Coffey Praises Portarlington’s Young Guns Ahead Of Leinster Quarter-Final
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Darragh Murray Named In Irish Squad For Fiji Clash
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Kilcormac Killoughey Captain Full Of Praise For Goalkeeper
Lough Lene Gaels Suffer Late Heartbreak In Leinster Quarter-Final
Crookedwood Win Leinster Junior Camogie Title
Conor Slevin Wins Dramatic Leinster Quarter-Final For Kilcormac Killoughey
Ireland Secure Comfortable Win Over Argentina
Kilcormac Killoughey Seal Win But Heartbreak For Lough Lene Gaels And The Harps