It’s a crowded U.S. Open leaderboard, with big names and some not so well known

Jordan Spieth reacts to a missed putt on the 16th green during the first round of the 2018 U.S. Open at Shinnecock Hills Golf Club in Southampton, N.Y.

Officials search for a ball hit by Emiliano Grillo of Argentina into the fescue on the first hole during the first round of the U.S. Open Golf Championship in Southampton, N.Y.

Tiger Woods, left, and Dustin Johnson line up their putts on the 16th green during the first round of the U.S. Open Golf Championship in Southampton, N.Y.

Jordan Spieth, Rory McIlroy and Phil Mickelson walk up the 10th green during the first round of the 2018 U.S. Open at Shinnecock Hills Golf Club.

Rory McIlroy of Northern Ireland plays his second shot on the 12th hole during the first round of the 2018 U.S. Open at Shinnecock Hills Golf Club in Southampton, N.Y.

Tiger Woods walks off the 15th tee during the first round of the U.S. Open Golf Championship in Southampton, N.Y.

Dustin Johnson lines up a putt on the 10th green during the first round of the U.S. Open Golf Championship in Southampton, N.Y.

Will Zalatoris plays out of deep grass on the third hole during the first round of the 2018 U.S. Open at Shinnecock Hills Golf Club.

Patrick Reed reacts after playing a shot from a bunker on the second hole during the first round of the U.S. Open Golf Championship.

Rory McIlroy watches his approach shot from the rough on the third hole during the first round of the U.S. Open Golf Championship in Southampton, N.Y.

Hideki Matsuyama of Japan hits out of the fescue on the 16th hole during the first round of the U.S. Open Golf Championship.

Spectators watch play during the first round of the U.S. Open Golf Championship in Southampton, N.Y.

Phil Mickelson hits out of the fescue on the 12th hole during the first round of the U.S. Open Golf Championship in Southampton, N.Y.