Michele Redman and Sweden’s Maria Hjorth shot 6-under 66s to share the first-round lead in the LPGA Tour’s Longs Drugs Challenge.

Redman and Hjorth both had seven birdies and a bogey on a sunny day at Blackhawk Country Club. In-Kyung Kim and Mikaela Parmlid were tied for second at 67.

Norway’s Suzann Pettersen, a playoff winner over top-ranked Lorena Ochoa last year at Blackhawk, was two strokes back at 68, along with LPGA Championship winner Yani Tseng, Sarah Lee, Sarah Kemp, Meaghan Francella, Reilley Rankin and Wendy Ward.