A birdie at the last saw Shane Lowry end the opening day of the RBC Heritage in South Carolina on 1-under par.
The 2019 Open champion is eight shots behind the leader, Australian Cameron Smith.
Graeme McDowell is 2-over.
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On 1-over par, Paul Dunne is best of the Irish going into the second day of the Austria Open.
He's six shots off the overnight leader, Alejandro Canizares of Spain.
Cormac Sharvin is 3-over, Gavin Moynihan is 5-over, and Jonathan Caldwell is 8-over par.