A statistical breakdown of the courses used during the 2013 PGA Tour season.
Toughest course: Merion Golf Club
Remember when people wondered if Merion would be able to stand up to the modern player? Turns out there was nothing to worry about. This year's U.S. Open course played the toughest on tour with an average score of 4.546 shots over par. In fact, the four major championship venues came in Nos. 1-4, with Muirfield (+3.478), Oak Hill (+1.996) and Augusta National (+1.318) following Merion.
Credit: PGA National
Toughest course (Non-major division): PGA National
That scary "Bear Trap" you always hear golf announcers talk about? Well, it's actually pretty intimidating. PGA National's three-hole stretch of 15-17 was a big reason why the course played to an average of 1.318 over par. Other courses that played over par were Muirfield Village, Innisbrook, Congressional, Firestone and Quail Hollow, which rounded out the top 10 courses in terms of difficulty.
STEPHEN DUNN/GETTY IMAGES
Easiest course: PGA West (Nicklaus)
The Humana Challenge, formerly the Bob Hope Classic, has always had the reputation of being a birdiefest so it should be no surprise that the three courses used in the tournament -- PGA West (Nicklaus), PGA West (Palmer) and La Quinta CC -- were the three easiest courses on tour this year. What might be a surprise is it was the Nicklaus track that was easiest by far with an average of exactly four shots under par. This, despite the fact it was the Palmer course that yielded 10 scores of 64 or lower during the final round, including three 62s.