The Back Nine: McIlroy relates to Kaymer's dominance

PINEHURST, N.C. – We’ve reached the midway point of the 114 th U.S. Open at Pinehurst No. 2 with Martin Kaymer in total control. Kaymer’s second round 65 put him at 10 under par for the tournament and sends him to the weekend with a six-shot lead over Brendon Todd and a seven-shot cushion over two others. Still, there’s plenty of golf left and to catch you up on Friday’s action, here are nine nuggets of news, insight and analysis.