10. Hunter Mahan, Ryder Cup bid
Mahan won twice early in 2012 and was No. 1 on the U.S. Ryder Cup points list entering the Masters. He had only one top-10 leading to the team's finalizing and failed to make the squad. (Getty)
9. John Daly, Justin Timberlake SHO
Winless on Tour since 2004, Daly shot 63 in Round 2 of the Justin Timberlake event in Las Vegas to move to T-6 entering the weekend. He then shot 86 in Round 3 and finished dead last. (AP)
8. Yani Tseng, mid-season slump
Tseng won three of her first five starts in 2012 to continue her LPGA dominance but beginning in June, went 11 events without a top 10, missing three cuts. (Getty)
7. Spencer Levin, Waste Management Open
Levin tied a PGA Tour record for largest 54-hole lead lost, blowing a six-shot advantage Sunday in Phoenix. Kyle Stanley won the event after collapsing the week prior. (Getty)
6. Jim Furyk, U.S. Open
Furyk held a share of the lead in the U.S. Open going to the par-5 16th Sunday at The Olympic Club but snap-hooked his tee shot and made bogey. One back on the 18th, he again made bogey and failed to win his second career major. (Getty)
5. Jim Furyk, WGC-Bridgestone Invitational
Leading by one on the 72nd hole at Firestone, Furyk needed par to win and bogey to force a playoff with Keegan Bradley. Instead, he butchered the final hole for a double bogey to add to his U.S. Open heartbreak. (Getty)
4. Kyle Stanley, Farmers Insurance Open
Stanley led by three while playing his third shot to the par-5 18th at Torrey Pines. He hit that in the water, made triple and lost to Brandt Snedeker in a playoff. (Getty)
3. I.K. Kim, Kraft Nabisco Championship
Kim missed an 18-inch putt to win the first major of the season, the Kraft Nabisco Championship, and then lost on the first playoff hole to Sun Young Yoo. (Getty)
2. Adam Scott, Open Championship
Seeking his first major, Scott led by four with four to play at Royal Lytham & St. Annes. He then bogeyed each of his final four holes to lose, by one, to Ernie Els. (Getty)
1. U.S. Ryder Cup team, Meltdown at Medinah
On home soil, the U.S. was up 10-4 midway through Saturday's afternoon session, and 10-6 entering singles. They won only 3 1/2 of the 12 points Sunday to lose the cup. (Getty)
