The Women's PGA Championship is a two-way battle ahead of the final day with Lizette Salas and Nelly Korda equal leaders and five strokes ahead.

The American pair are both 15-under, after 31-year-old Salas carded a five-under-67 on Saturday, to pull level with world number three Korda at the Atlanta Athletic Club.

Korda, 22, carded a bogey-free four-under 68, to follow her excellent 63 on Friday, having won last week's Meijer LPGA Classic.

Former British Open runner-up Salas had six birdies on her front nine, as she carded 67 for the third consecutive day in her pursuit of her maiden major title.

Thailand's 12th-ranked Patty Tavatanakit finished a round-best seven-under-65 to move into a tie for second.

Tavatanakit is 10-under after three rounds, equal with Giulia Molinaro and Celine Boutier.

World number two Inbee Park slipped out of contention, having started the day at five-under before a five-over-77 left her well off the pace.

Yuka Saso, who won the U.S. Women's Open earlier this month, carded a three-over 75 and is also well behind.