This format has been intact since 2015 and replaces the 64-player, single-elimination bracket used from 1999-2014.
"It's ironic to think that the last time I won was when Arnie passed away". The victor of each group progresses to the round of 16, and it's single elimination from that point on. "I'll have to play my best and make as many birdies as possible", said Shubhankar, who was tied ninth at the World Golf Championships-Mexico Championship after leading on day two and three earlier this month, .
PGATour.com's Rob Bolton placed 2016 champion Jason Day at the top of his power rankings heading into the tournament, one spot ahead of 2015 Match Play champion and last week's Arnold Palmer Invitational victor Rory McIlroy.
Dustin Johnson won as the number one seed past year in a dominating performance. "If it was stroke play then I may have a little harder time". In the final, he beat Jon Rahm on the 18th hole.
It is a showdown that three-time major victor Spieth is excited about, with Reed representing tough - and sometimes vocal - opposition.
Six eligible players have decided not to play: Justin Rose, Rickie Fowler, Henrik Stenson, Brooks Koepka and Adam Scott. Among others in the field are Rory McIlroy, Sergio Garcia and Phil Mickelson. Kiradech Aphibarnrat may only be the 28 seed, but he has already won a European Tour event this year, taking the ISPS HANDA World Super 6 Perth in February. SI.com's picks to advance are bolded. Course: Austin CC. Yardage: 7,108.
The match-play tournament sees 64 players split into 16 groups of four.
This event has moved around more than any of the other World Golf Championships.
"So I'm looking to these two weeks - I'm looking forward, I'm not looking back".
This is the third year at ACC. Notes: Johnson is the No. 1 seed for the second straight year.
Making his WGC debut is Day's countryman Cameron Smith.
Austin resident Dylan Frittelli, who is playing in the Match Play for the first time this week, told the Golf Channel that he noticed heightened security at Austin Country Club on Sunday. Reed transforms into Captain America when representing the red, white and blue, and while there's no team aspect this week, Reed has the fiery competitiveness needed to excel in head-to-head.
Jordan Spieth also had a tricky draw, with Patrick Reed joining him in Group 4, while Johnson will have to navigate past Kevin Kisner, Adam Hadwin and Bernd Wiesberger in Group 1.
Luke List's greatest run of his PGA Tour career has resulted in another accomplishment.