John Senden ... Seemingly nary an opportunity passes when he's not lauded as one of the world's best ball-strikers -- here's yet another well-deserved mention -- but the Aussie is putting better than ever. At 21st in strokes gained at plus-0.440 and 23rd in average distance of putts made, he's liable to go low at any time. The 43-year-old showcased this combination en route to his second PGA TOUR victory at the Valspar Championship two months ago. Currently 15th in FedExCup points.
Gary Christian ... The 42-year-old Englishman is making his season debut. He has status via a Non-exempt Medical Extension affording three starts to earn $520,151 or 317 FedExCup points and a promotion to the Major Medical category. (Six golfers have already turned this trick in 2013-14). He torn the ACL in his right knee "during [an] after-dinner walk," so he stated on Twitter when it happened last July. In his return to sanctioned competition, missed the cut on the Web.com Tour two weeks ago. Has bided his time co-hosting "Afternoon Tee" on the PGA TOUR's SiriusXM channel.
Ryuji Imada ... Born in Hiroshima, Japan, he moved to Tampa, Florida at the age of 14. Now 37, he spent eight consecutive years on the PGA TOUR until losing fully exempt status following the 2012 season. His lone victory occurred in 2008 at the AT&T Classic on a dried-out TPC Sugarloaf. He'd go on to finish 13th on the money list and 25th in the FedExCup. Two top 10s in nine appearances at Las Colinas, including a T3 in 2011.
Alex Aragon ... Back on the PGA TOUR as a sophomore, albeit eight seasons after his rookie year of 2006 when he went 6-for-26 with no top 30s. He had survived all three stages of qualifying school to earn his card. The 34-year-old was born in Mexico City. He attended Torrey Pines High School in California. Fellow alums include Pat Perez, Jamie Lovemark and Michael Kim. Aragon then took his talents to Stanford where he majored in industrial engineering. In 10 starts this season, he's survived only two cuts, neither of which resulting in a top 70.
Marcel Siem ... While countryman Martin Kaymer is also in the field, Siem will be attempting to give Germany consecutive victories on the PGA TOUR. He's a three-time winner on the European Tour where he's competed regularly since 2002. Relatively long off the tee and fares well with his putter. Just 33 years of age, he's arguably best known in the U.S. as having a pony tail. His only top 10 in 17 TOUR starts was a T10 at the 2013 Valero Texas Open.