McIlroy & Woods sent packing
Rory McIlroy and Tiger Woods were both beaten in the first round of the WGC-Accenture Match Play Championship on a day of shocks in Arizona.
McIlroy lost to fellow Irishman Shane Lowry and Woods was defeated by Charles Howell III, while Lee Westwood was another big name to fall at the first hurdle.
Lowry claimed a hard-fought 1up victory over McIlroy, the Portugal Masters champion coming from two down early on to defeat the World No 1 on the final green.
An inspired spell early on the back nine put Lowry on the path to victory, the 25-year-old chipping in at 11 and 12 and then making a fabulous eagle at 13 to take control of proceedings.
A disappointed McIlroy said afterwards: "We both gave each other a few holes and I hit too many loose iron shots out there. I drove the ball really well I just couldn't take advantage of that. I probably should have been three or four up after five holes but I let him get back into the match."
Woods was never in front against Howell as he eventually slipped to a 2&1 defeat, meaning the three-time champion has still progress beyond the second round at this venue.
Woods knocked out
Having got himself back level with a birdie at 13, Woods could not respond as his opponent made back-to-back birdies at 15 and 16 to move two up and, as the light faded, bowed out as the 17th was halved in pars.
England's Westwood saw a three-hole lead slip as he was beaten at the first extra hole by Spain's Rafael Cabrera-Bello.
A final-hole birdie was enough for Luke Donald to scrape past Germany's Marcel Siem with a 1up victory following a high-quality encounter that saw both men finish well under-par.
Graeme McDowell got the better of Padraig Harrington in the day's other all-Irish affair, McDowell finally emerging a 2up winner after his opponent made a hash of the 18th having fought back from three behind.
There were more surprises as Australia's Marcus Fraser dumped out Keegan Bradley and Tim Clark saw off Adam Scott, while Sweden's Alex Noren thumped Dustin Johnson 6&4.
Open champion Ernie Els went down to a narrow defeat against Sweden's Fredrik Jacobson, but there were solid wins for the likes of Louis Oosthuizen, Martin Kaymer, Bubba Watson and Steve Stricker.