"I played great, didn't make too many mistakes, hitting the ball fantastically and had a lot of tap-in birdies," Lang said. "But I didn't finish off as strong as I'd like to. It gets pretty hot towards the end, so I need to get some rest and just make sure I'm eating and drinking enough out there."
Park also said the 90-degree weather made it difficult.
"I think I was affected a lot by the hot weather, that really made it hard to concentrate on the course," Park said. "I'm not a good player to play in such condition. But I've had success in recent years, like this year in Thailand and last year here in Malaysia. So I'm trying to relax a bit more and keep it going tomorrow."