J.J. Spaun handles tough Oakmont with the putter for a 66 and early US Open lead

OAKMONT, Pa. (AP) — J.J. Spaun handled the toughest test with a club that never fails any U.S. Open. His putter carried him to a 4-under 66, only the second bogey-free round in the last three U.S. Opens at Oakmont…