1. Jordan Spieth, United States: In danger of missing his third consecutive cut, Spieth rallied with some of his best golf of the year to tie for second last week in his title defense at the Dean & DeLuca Invitational. He was 3-over-par after five holes of the second round, but played his last 31 holes in 12-under, closing with a bogey-free 5-under 65 to finish one stroke behind winner Kevin Kisner. Spieth recorded his sixth top-10 finish of the season, including a victory in the AT&T Pebble Beach Pro-Am, and climbed to fifth in the FedExCup point standings. He is making his fifth start in the Memorial, with his best result a tie for third in 2015, when he closed with a 7-under-par 65 to finish two strokes out of the playoff in which David Lingmerth of Sweden defeated Justin Rose of England. That came a year after he was in contention until shooting 75 in the final round and slid to a tie for 19th.
8. Hideki Matsuyma, Japan: After winning twice early this season and finishing second on two other occasions, Matsuyama climbed into the top 10 in the world rankings and remains a solid No. 4. However, he has not played quite as well lately, after victories in the WGC-HSBC Champions and the Waste Management Phoenix Open. Matsuyama does not have a top-10 finish on the PGA Tour since his last victory, but has been playing better lately with a tie for 11th in the Masters and a tie for 22nd in the Players Championship. It figured he would cool off a bit, since he won five times around the world between October and February. Matsuyama is making his fourth start in the Memorial and he claimed his first victory on the U.S. circuit at Muirfield Village in 2014, when he beat Kevin Na with a par on the first playoff hole. He tied for fifth in his title defense after shooting 8-under-par 64 in round one, but shot 74-73 -- 147 last year to miss the cut by five strokes.
10. Kevin Kisner, United States: Showing tremendous grit by holding off defending champion Jordan Spieth and several others in the Dean & DeLuca Invitational, Kisner could be right back in the mix this week in the Memorial Tournament if he can make a quick turnaround and come down off that emotional high. He finished second six times on the PGA Tour before gaining his second PGA Tour victory last week, including runner-up results this year in the Arnold Palmer Invitational and the Zurich Classic of New Orleans, where he and partner Scott Brown lost in a playoff to Jonas Blixt and Cameron Smith. Kisner also tied for fourth in the Sony Open in Hawaii and tied for 10th in the AT&T Pebble Beach Pro-Am early this year before finally winning for the first time since the 2014 RSM Classic. He is playing for the fourth time in the Memorial Tournament and was near the top of the leaderboard all the way before posting a tie for eighth in 2015 after opening with a 5-under-par 67, but shot 72-74 -- 146 to miss the cut by four strokes last year.