After three rounds at Harbour Town Golf Links, Luke Donald sits on top of the leaderboard and just 18 holes from his first win on the PGA or European Tours since 2012. But the former world No. 1 should get too comfortable, because tournament and personal history aren't exactly on his side. Here's what You Oughta Know for Sunday of the RBC Heritage.
• Four of the previous five winners in Hilton Head were at least four shots back after 54 holes.
• Donald's last two 54-hole leads on the PGA Tour have come at this event, and he finished runner-up both instances.