Jordan Spieth, Jason Day, Rory McIlroy all start with WGC-Dell Match Play wins

Jordan Spieth plays his shot from the first tee during round two of the Hyundai Tournament of Champions on January 8, 2016
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Jordan Spieth, Jason Day and Rory McIlroy all start their World Golf Championship-Dell Match Play campaigns with wins at Austin Country Club.

The opening day of the World Golf Championship-Dell Match Play saw the world's top three players, Jordan Spieth, Jason Day and Rory McIlroy, all start the tournament with victories.

The world's highest-ranked 64 players face off in 16 groups of four before a knockout stage at the weekend, and Spieth, Day and McIlroy are all in pole position to advance.

Spieth ousted Welshman Jamie Donaldson 3&2 at Austin Country Club, while Day, who won last week's Arnold Palmer Invitational, was able to get over the line 3&2 against Graeme McDowell, despite appearing to suffer with a back injury.

McIlroy, meanwhile, was two down after 13 holes against Thorbjorn Olesen, but saw the Dane bogey three of the last five holes, including a shanked chip shot on the 18th which helped McIlroy win 1 Up.

World number 58 Jason Dufner caused the biggest upset with a 2&1 win over fifth-ranked Rickie Fowler, while the largest margin of victory on day one came from Matt Kuchar, who cruised to a 6&5 win over Anirban Lahiri in Group 7.

The green on the 495 yards par 4, 17th hole 'Road' with the 357 yards par 4, 18th hole 'Tom Morris' behind on the Old Course at St Andrews venue for The Open Championship in 2015, on July 29, 2014 in St Andrews, Scotland
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