OAKMONT, Pennsylvania :Overnight U.S. Open leader J.J. Spaun got his second round underway on Friday at Oakmont Country Club where pre-tournament favourite and world number one Scottie Scheffler was unable to play his way into contention. Spaun, who carded the only bogey-free round at Oakmont on Thursday for a one-shot lead, set off from the first tee under cloudy skies and with a slew of players breathing down his neck and started his day with a par. Among the early starters, Sam Burns fired a