Two-time champion Brooke Henderson birdied all four par-5 holes for a 7-under 65 on Thursday in The Standard Portland Classic, leaving the slumping Canadian a stroke behind first-round leader Adela Cernousek.

Arpichaya Yubol followed a career-best finish on the LPGA Tour with a career-low 10-under 61 and took a two-shot lead over Jenny Shin after the first round of the ShopRite LPGA Classic.