PINEHURST, N.C. — Eight was enough.
It was way more than enough, really. What Martin Kaymer did Sunday, obliterating the rest of the U.S. Open field, ranks as one of the best performances ever at the Open.
Kaymer started Saturday ahead by five strokes and ended it ahead by eight. Only three players finished under par at this grueling event, and the other two, Americans Erik Compton and Rickie Fowler, were a modest 1-under par.
But Kaymer? He was 9-under…