Another one drops for Ai

PITTSFORD, N.Y. -- It's another birdie for Ai Miyazato on the par-4 16th, this time courtesy of a holed six-footer. She's now in a tie for second at -6. She's made seven birdies in 12 holes. This is very cool.

Meanwhile, Cristie Kerr is playing exactly the way a leader with an eight-shot 54-hole cushion should: aiming for the center of the fairways and the middle of the greens, not taking any risks. Still, she's managed birdies on holes 7 and 8 thanks to her stellar short game; at 15-under, her lead is now nine shots with 10 holes to play. There's no doubt she'll win her second major today, the only question is whether she'll end up the first American at the top of the Rolex World Ranking since its inception in 2006. Ai Miyazato may just ruin that part of the party.

--Stina Sternberg