Hinako Shibuno takes halfway lead in final major at Mission Hills

• Shibuno shoots 66 on Friday to take lead after 36 holes
• Defending champion Patty Tavatanakit (69) sits one back

Hinako Shibuno's first impression of Mission Hills Country Club in Rancho Mirage was far from confidence-inspiring - and, in hindsight, mistaken.

It was a hard course for me. I couldn't even imagine I could play here," the 23-year-old from Japan said through an interpreter Friday, recalling the initial time she played the event now known as the Chevron Championship.