Harris English posted a remarkable total of 17- under-par 123 on Monday to top the British Open qualifier at Gleneagles Golf & Country Club.
English fired a 10-under 60 in the first round and followed with a 63 in the second round. His 60 set a new course record by two strokes. Fred Couples had the old mark of 62 in 1995.
The 22-year-old English started on the back nine for his first round and posted an eagle and two birdies to make the turn at four-under. He ran off six consecutive birdies from the third before closing with a par to shoot 60.
In his afternoon round, English had three birdies on the front nine and four more around the turn to win the qualifier by four strokes.
England's Greg Owen carded a 66 in the first round, before firing a 61 in the second round, taking second at minus-13. Stephen Ames, Andres Romero and Justin Kicks shared third at 10-under-par 130.
Bob Estes, Daniel Chopra and James Driscoll grabbed the final three available spots by ending at minus-nine. Russell Knox also finished at nine-under, but lost out in a playoff.
Estes birdied the first playoff hole to earn his spot, while Chopra and Driscoll parred the second extra hole to earn the final two.
The 141st Open Championship tees off July 19 at Royal Lytham & St. Annes.