The Royal & Ancient Golf Club and the U.S. Golf Association said the proposed rule would make it illegal for pro golfers to "anchor" the club to their bodies while making a stroke. The new rule would not take effect until 2016.
Tiger Woods was one shot behind Rory McIlroy, who birdied his last two holes for an 8-under 64 and was in a four-way tie for the lead. Tiger Woods made a 30-foot chip in to birdie the last hole of the first round of the BMW Championship.