Rory McIlroy and Tiger Woods were both eliminated from the Match Play Championship on Thursday - the first time in 11 years the top two seeds were knocked out on the first day.

Shane Lowry made a 4-foot par putt on the 18th hole to eliminate McIlroy, making it three years out of four the top seed went home after day one.

"It's definitely a day I'm going to remember," said Lowry, the third player in the last four years to beat the No 1 seed in the opening round.

Moments later, Charles Howell III beat the second-seeded Woods on the 17th hole. Howell nearly holed a wedge for birdie on the 16th and made a 25-foot birdie on the 16th to seize control.

"I had nothing to lose," said Howell, who started the year outside the top 100 in the world and hasn't qualified for this World Golf Championship in five years. "In this format, match play is crazy. He's Tiger Woods. I was lucky to hang in there."

The final matches were played in near darkness, and they could have stopped after 15 holes. Woods wanted to play on, even though Howell had the momentum. Woods was 2 under for the day, and neither of them made a bogey.

"We both played well," Woods said. "He made a couple of more birdies than I did. He played well, and he's advancing."

McIlroy, the No 1 player in the world, built a 2-up lead early in the match until Lowry rallied and grabbed the moment by chipping in for birdie on the par-3 12th and then ripping a fairway metal to within a few feet for a conceded eagle on the 13th.

Lowry missed a short par putt on the 14th, only for McIlroy to give away the next hole with a tee shot into the desert and a bunker shot that flew over the 15th green and into a cactus. But the two-time major champion hung tough, coming up with a clutch birdie on the 16th to stay in the game.

McIlroy nearly holed his bunker on the 18th, and Lowry followed with a steady shot out to 4 feet and calmly sank the putt.

"Deep down, I knew I could beat him," Lowry said. "There's a reason I'm here, and this is match play."

For McIlroy, more questions are sure to follow him to Florida for his road to the Masters. He now has played only 54 holes in the first two months of the season, missing the cut in Abu Dhabi and losing in the first round at Dove Mountain.

"You want to try and get as far as you can, but I guess that's match play," McIlroy said. "I probably would have lost by more if I had played someone else in the field. It wasn't a great quality match. But it would have been nice to get through and just get another day here and another competitive round under my belt."

Just like that, the Match Play Championship lost its two biggest stars in one day. The only other time the top two seeds lost in the opening round was in 2002, when Woods and Phil Mickelson lost at La Costa.

Luke Donald nearly made it the top three seeds, but saved himself with a clutch performance. He holed a 10-foot birdie putt to halve the 17th hole and stay tied with Marcel Siem of Germany. Donald then birdied the 18th from 7 feet to win the match.

Louis Oosthuizen, the No 4 seed, rallied to get past Richie Ramsay of Scotland.

The opening round was halted Wednesday after 3 hours because of a freak snowstorm that covered Dove Mountain with nearly 2 inches. It continued to snow at times overnight, and it took nearly five hours to clear snow from the golf course for the tournament to resume.

Turns out snow wasn't the only surprise.

Howell said he has never beaten Woods - not as an amateur, not even in dozens of games at Isleworth before Woods moved away to south Florida. What a time to change that losing streak.

"I had to play extremely well to have a chance, and I still kept waiting for that Tiger moment," Howell said.

It never came.

In other matches:

- Ernie Els lost in the opening round for the sixth time. He missed a 3-foot par putt on the 16th hole that would have given him the lead, and he missed a 5-foot par putt on the 18th hole to lose to Fredrik Jacobson.

- Russell Henley, two months into his rookie season, defeated the hottest player in the field when he took down Charl Schwartzel, who had won twice and finished no worse than fifth in his last six tournaments worldwide.

- Rafael Cabrera Bello beat Lee Westwood in 19 holes after Westwood missed a 6-foot par putt on the last hole.