BELMONT, Mich. — Inbee Park took the second-round lead in the Meijer LPGA Classic, birdieing her first three holes Friday en route to her second straight 5-under 66.

Park finished on the front nine, adding birdies on the par-5 fifth and eighth holes in her bogey-free round at Blythefield Country Club.

The third-ranked South Korean player won six times last year and took the Manulife Financial in June in Canada for her 10th LPGA Tour title.

IRVINE, Calif. — Tom Shields upset three-time Olympic champion Michael Phelps by a hundredth of a second to win the 100-meter butterfly at the U.S. national championships Friday night.Shields touched in 51.29 seconds, tying for the second-fastest time in the world this year.Phelps was second in 51.30, losing for the second time in two events since he launched a comeback in April.Four of the seven quickest times in the world were recorded in the morning preliminaries, led by Phelps’ 51.17. But he couldn’t keep it together in the final against Shields, who won the 200 fly earlier in the meet.