A blustery wind gave most of the contenders problems, and the 20-year-old Brewster resident landed in a fourth-place tie.
He was three shots off the lead at lunch, opening with a 79. The afternoon round got off to a great start, and Miller was a co-leader after seven holes, but fell back after bogeys a Nos. 9 and 10. He finished in a fourth-place tie with Daan Huizing of the Netherlands with an 11-over 299 total.
Gavin Moynihan, a 17-year-old schoolboy from Ireland, became the youngest native to win the championship. He closed 76-75 to finish at 7-over.
Miller is flying back this morning, and will be right back on the course at Knollwood Country Club in a qualifier for the Westchester Amateur. Next is a Thursday qualifier for the U.S. Open at Trump National Westchester.