Mickelson leads by one stroke heading into final round of U.S. Open; 3 tied for second

The frustration was visible on Phil Mickelson's face Saturday in the third round of the U.S. Open. If his birdie attempts weren't burning the edge of the hole, they were going in a different direction than what Mickelson had expected, a trait of the befuddling greens on Merion Golf Club's East Course.