Ko struggles again, ties for 51st

Lydia Ko figured, if nothing else, she got a lot of practice out of the thick rough in the ANA Inspiration.

"I think I've learned a lot how to play rough shots," the top-ranked Ko said on Sunday. "That is one of the biggest things I've learned this week - and it was tough. It was really thick. So, I was learning something there. It was really good experience.

"It's my third year of playing this event. It's a really good course ... you really need your A game and I really didn't have that this week."