Martin Kaymer joins rare company to reach 10 under in U.S. Open

Martin Kaymer finds himself in rare company after two rounds of the 2014 U.S. Open.

With a second-consecutive round of 5-under 65 at Pinehurst No. 2, Kaymer posted a two-round total of 10-under-par 130 at the halfway mark of the national championship. That total, in and of itself, is a record, beating Rory McIlroy's 36-hole mark of 131 at through two rounds of the 2011 U.S. Open at a weakened Congressional Country Club.

The German also finds himself in the unique position of being one of six players to ever reach double digits under par at any point in a U.S. Open.

Here's the full list:

• Dr. Gil Morgan, 1992 U.S. Open at Pebble Beach, par 72
• Tiger Woods, 2000 U.S. Open at Pebble Beach, par 71
• Jim Furyk, 2003 U.S. Open at Olympia Fields, par 70
• Ricky Barnes, 2009 U.S. Open at Bethpage Black, par 70
• Rory McIlroy, 2011 U.S. Open at Congressional Country Club, par 71 (did it in a record 26 holes)

Of those five, only Woods and McIlroy finished the championship at double digits under par. Three of the five won the championship, including Woods, McIlroy and Furyk.