Dave Coupland finished his first day at The Open one over par.
The Bostonian, who is attached to Woodhall Spa Golf Club, began in confident mood at Royal Troon, hitting a birdie on the par-four second hole.
The 30-year-old remained on -1 until carding consecutive bogeys on the 14th and 15th.
A second birdie on the par-three 17th was a welcome response.
However, he finished his day on +1 after a bogey on the 18th, carding a round of 72.
He will tee off tomorrow at 4,05pm, keen to make the cut.