The WGC-Match Play at Austin Country Club starts with 16 groups of four players contesting round-robin matches on Wednesday through Friday, with only the winners of each group advancing to Saturday's round of 16.

Day, the top seed in group 12 has been drawn alongside five-time major champion Phil Mickelson, as well as 2016 Open Championship winner Henrik Stenson and former US Open champion Jim Furyk, who was runner-up at the Players Championship eight days ago.

Former World No.1 Day, who won the WGC-Match Play in 2014 and 2016, relished the tough assignment.

"Phil, Henrik and Furyk ... wow, that's a tough group; we're all major winners," Day told AAP on Monday.

"But I feel I've got plenty of experience on my side, having won this event twice.

"I love the fight and grind of the match play format, so I'm really looking forward to these three matches."

RIGHT: Day won the WGC-Match Play in 2014 and 2016 (pictured). PHOTO: Christian Petersen/Getty Images.

Stenson (2007) is the only other player in Day's group to have won the event.

Day's fellow Australian Marc Leishman drew group six's top seed Bryson DeChambeau, as well as Thailand's Kiradech Aphibarnrat and Scotland's Russell Knox.

Rounding out the three-player Australian contingent in Austin, Texas is Cameron Smith; the last Australian standing at last year's event where he reached the quarter-finals.

Smith drew Sunday's Valspar Championship winner Paul Casey, as well as veteran Charles Howell III and reigning Australian Open champion Abraham Ancer.

Tiger Woods, a three-time WGC-Match Play winner, drew Patrick Cantlay, Brandt Snedeker and Aaron Wise.

Group 1 - Dustin Johnson, Hideki Matsuyama, Branden Grace, Chez Reavie

Group 2 - Justin Rose, Gary Woodland, Eddie Pepperell, Emiliano Grillo

Group 3 - Brooks Koepka, Alex Noren, Haotong Li, Tom Lewis

Group 4 - Rory McIlroy, Matthew Fitzpatrick, Justin Harding, Luke List

Group 5 - Justin Thomas, Keegan Bradley, Matt Wallace, Lucas Bjerregaard

Group 6 - Bryson DeChambeau, Marc Leishman, Kiradech Aphibarnrat, Russell Knox

Group 7 - Francesco Molinari, Webb Simpson, Thorbjorn Olesen, Satoshi Kodaira

Group 8 - Jon Rahm, Matt Kuchar, JB Holmes, Si Woo Kim

Group 9 - Xander Schauffele, Rafa Cabrera-Bello, Tyrrell Hatton, Lee Westwood

Group 10 - Paul Casey, Cameron Smith, Charles Howell III, Abraham Ancer

Group 11 - Tommy Fleetwood, Louis Oosthuizen, Kyle Stanley, Byeong Hun An

Group 12 - Jason Day, Phil Mickelson, Henrik Stenson, Jim Furyk

Group 13 - Tiger Woods, Patrick Cantlay, Brandt Snedeker, Aaron Wise

Group 14 - Tony Finau, Ian Poulter, Kevin Kisner, Keith Mitchell

Group 15 - Bubba Watson (defending champion), Jordan Spieth, Billy Horschel, Kevin Na

Group 16 - Patrick Reed, Sergio Garcia, Shane Lowry, Andrew Putnam

- Evin Priest, Australian Associated Press