Kevin Kisner has surged to the top of the fledging leaderboard at The Open after an impressive 66 on day one.
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The American took advantage of fair conditions at Kirnoustie to card an eagle and four birdies in to finish five-under-par, which proved enough for the outright lead at the close of play.
South African pair Erik van Rooyen and Zander Lombard, along with American Tony Finau, are a shot adrift of Kisner after 67s.
Brandon Stone, another South African who won the Scottish Open earlier this week, is a further shot behind, alongside United States duo Ryan Moore and Brendan Steele.
Northern Ireland's Rory McIlroy began his bid for a first Major in four years with an opening-round 69, three shots behind Kisner.
Tiger Woods, taking part in his first Open since 2015, was two-under after 12 but ended with a 71, while defending champion Jordan Spieth and Justin Rose are one over.
World number one Dustin Johnson, meanwhile, saw his chances harmed by a triple bogey on the par-four 18th to finish with a five-over 76.
THE OPEN LEADERBOARD AFTER ROUND ONE
1. Kevin Kisner (-5)
2. Erik van Rooyen (-4)
=. Tony Finau (-4)
=. Zander Lombard (-4)
5. Brandon Stone (-3)
=. Brendan Steele (-3)
=. Ryan Moore (-3)