Martin Kaymer, 5 shots up, begins bid for US OpenPINEHURST, N.C. (AP) Martin Kaymer teed off Sunday at the U.S. Open with a commanding five-shot lead. Kaymer was trying to win his second major title afterSI Staff|Share on FacebookShare on XAdd us as a preferred sourceMartin Kaymer, 5 shots up, begins bid for US OpenAdd us as a preferred source on GoogleFollowLoading recommendations... Please wait while we load personalized content recommendationsPublished Jun 15, 2014 | Modified Jun 15, 2014SI STAFFShare on FacebookShare on X