Charlie Wi continues to stalk his first PGA TOUR victory –- and follow the instructions he has written on his pin sheet.

That’s where he has written "It's a marathon" and "play one hole at a time." Wi has certainly remained patient this week at Cog Hill, and he’s tied for the lead, as a result.

Wi showed he wasn’t going away when he rolled in a 22-foot birdie putt on the first hole to take the lead. Matt Kuchar overtook him with consecutive birdies at Nos. 3 and 4 but the South Korean, who has lived in California since he was 10, just made an 8-footer to tie at the fifth hole.