Amateur Ryder Cowan takes the early lead and is tied for second in a strong US Open debut

Ryder Cowan knew he was playing good golf coming into the U.S. Open.Midway through his round Thursday, the leaderboard showed that the amateur was playing the best golf of anyone at Shinnecock Hills.Cowan, a 21-year-old who will be a senior at Oklahoma, briefly held the lead in his first major championship before finishing with a 2-under 68, matching the lowest round by an amateur at Shinnecock. He was tied for second when the first round was suspended because of darkness.“Through nine, I looked up and I was 3-under par,” Cowan said. “I definitely looked at that leaderboard, and I saw it up there.”A couple bogeys on his second nine knocked him back, but with the sun setting, Cowan finished strong shortly before play was stopped for the day. Playing the ninth hole, he hit his approach to 5 feet and knocked in the putt for his fourth birdie of the round. Starting on the back, he had three of them in his first eight holes, moving to 3-under and into the lead after his birdie at the par-3