Clayton averaged 111.33 in the end in a 6-0 victory and said that he knows he's got the game and that it's a massive step in the right direction for him.
"I know I've got the game, it's just about being consistent and confidence is key in darts," Clayton explained.
"I'm so happy with how I played tonight, it's a massive step in the right direction for me.
"I knew what I had to do and it went well. I know James didn't play to his best at all but that's when you've got to take your chances and that's what I did."