Walker has made 15 birdies and four bogeys over two rounds, shooting a 5-under 67 on Friday at Albany.
Walker described the swing change on Thursday, following his opening 66, as a "head move." "You have to really enjoy watching the golf swing to probably see it," he said.
Actually, it's pretty evident. At least once he pointed it out. You can see how his head transitions more through impact. It doesn't look like a big deal, but, apparently, it is.
"It's still not natural. ... It's a big move for me," Walker said. "I can tell when I do it and when I don't do it. That's what's nice, when you're working on something and you can feel when you don't do it.
"It feels really good, but it's definitely still unnatural."