CHASKA, Minn. (AP) — Ina Yoon stretched her lead at the Women’s PGA Championship with a 3-under 69 that put her five strokes up on the second-place pack after another strong South Korean showing Friday. Yoon, who shot a record 63 in the first round at Hazeltine National Golf Club, had two bogeys with one birdie on the back nine to reach 12 under. The 23-year-old is seeking her first LPGA Tour victory. “The remaining two days will obviously be nerve-racking, but being nervous is human nature,