Andrew Putnam and Rickie Fowler surged to the top of the Zozo Championship leaderboard at 10-under, as overnight leader Brendan Steele plunged 23 places in Friday's second round.Putnam followed his opening 68 with a bogey-free 8-under 62, while Fowler backed up his initial 67 with a bogey-free 63 to share the lead at Narashino Country Club outside Tokyo.Americans occupy the top four rungs at the halfway point, with Keegan Bradley third at 9-under after a round of 65 and John Huh a further stroke back following his 9-under 61, the tournament's low round so far.Keita Nakajima is the highest-r…READ FULL ARTICLE