As other stars struggle on opening day, world No. 1 Dustin Johnson cruises to victory
Dustin Johnson lines up a putt on the sixth hole at Austin County Club. AP

AUSTIN, Texas — On a day when other top seeds didn't fare very well, Dustin Johnson made short work in his debut as the No. 1 seed.

Johnson made five birdies in his opening eight holes and never gave Webb Simpson much of a chance in a 5-and-3 victory at the Dell Technologies Match Play.

Of the top five seeds, Rory McIlroy (2) was beaten by four straight birdies from Soren Kjeldsen. Jason Day (3) withdrew to be with his mother as she has surgery Friday for lung cancer. Jordan Spieth (5) lost on the 16th hole to Hideto Tanihara, who was making his Match Play debut.

Hideki Matsuyama, the No. 4 seed, halved his match against Jim Furyk.

McIlroy and Spieth now need some help to advance out of their four-man group into the knockout stage on the weekend at Austin Country Club.

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