AUSTIN, Texas – Call it black Wednesday, but then the one-and-done aspect of the WGC-Dell Technologies Match Play was dulled three years ago with the introduction of round-robin play that assures every player at least three matches in pool play. Otherwise Wednesday at Austin Country Club would go down as one of the championship’s darkest hours for the top of the dance card. In order, world No. 1 and defending champion Dustin Johnson dropped his Day 1 match, 3 and 1, to world No. 56 Bernd Wiesberger; last week’s winner Rory McIlroy lost to PGA Tour rookie Peter Uihlein, 2 and 1, and Phil Mickelson, the winner of the last WGC in Mexico, dropped a 3-and-2 decision to Charles Howell III. All told, 11 lower-seeded players pulled off “upsets” on Wednesday, although it’s widely held that the Match Play is more prone to these types of underdog performances than the NCAA men’s basketball tournament. But if it wasn’t March Madness, it was at the least March Mayhem, particularly for those who shuffled around Austin Country Club in a state of mild confusion. Although there were plenty of matches that went according to plan – with top-seeded players Justin Thomas, Jordan Spieth, Jason Day, Hideki Matsuyama and Sergio Garcia all winning – it was still a tough day for chalk with three of the top 10 players in the world ranking either losing or halving (world No. 3 Jon Rahm halved his duel with Keegan Bradley) their matches. At least McIlroy made things interesting after finding himself 5 down through 13 holes. The Northern Irishman played his last six holes in 5 under par to push the match to the 17th hole, but Uihlein closed out the bout with a par. “If he birdies seven straight on you, hats off to him. It is what it is,” Uihlein said of McIlroy’s late surge. “I felt like if I just kind of kept giving myself a chance, I didn’t want to give him any holes. He made me earn it, so hats off to it.” WGC-Dell Technologies Match Play: Full bracket | Scoring | Group standings WGC-Dell Technologies Match Play: Articles, photos and videos Johnson couldn’t say the same thing. After not trailing in any match on his way to victory at last year’s Match Play, Johnson hit a ball in the water, two out of bounds (on the same hole, no less) and began to fade when he made a double bogey-5 at the 11th hole. Although scoring is always skewed at the Match Play because of conceded putts, Johnson was listed at 9 over through 17 holes before his day came to a merciful end. “We both didn’t have a great day. I think we only made three birdies between us, which is not a lot out here,” Wiesberger said. “Obviously it wasn’t his best day. It wasn’t the best of my days. I think we both have to do a little bit of work this afternoon.” Although not as scrappy as Johnson’s round, Mickelson has also seen better days. Lefty made just a single birdie and played 17 holes in even par to lose just his second match in pool play. But then this event hasn’t exactly been kind to Lefty, who has advanced to the weekend just twice in 13 starts. “I was fortunate today, obviously, to get past him,” said Howell, who is the second-lowest seeded player to advance out of pool play when he did it in 2017 as the 61st player in the field. “But with this pod play the way it goes now, you never know. You’ve got to keep playing good. Last WGC we had, he won. So he’s never out of it.” That will be the solace those high-profile players who find themselves on the wrong side of the round-robin ledger now cling to. There is a path back. Since pool play began, just four players have lost their Day 1 matches and went on to win their group. One of those players is Johnson, who lost to Robert Streb on Wednesday in 2016 but still advanced to the quarterfinals. But if that helps ease the sting for those who now embrace the Match Play mulligan, it did little to quiet the crowds on what turned out to be a wild Wednesday.