Shane Lowry has made further progress at the WGC World Match Play in Arizona with a comfortable 6&5 win over Carl Pettersson and will next play Graeme McDowell.
Afterwards a delighted Lowry said: "I scraped the win against Rory and my iron play was a lot better. I put pressure on him the whole game.
"I wish every week was match play - I enjoy the head-to-head."
McDowell advanced after he edged out Alexander Noren on the third extra hole.
The Ulsterman was one down with one to play, but fired in a brilliant approach to four feet and won after his opponent strayed into the desert trying to reach the green on the par five second in two.
In other news from day two, Luke Donald was pummelled 7&6 by American Scott Piercy on Friday.
The British world number three was totally outplayed by Piercy, who was effectively seven under par on his ball after being conceded a four-foot birdie putt at the short 12th to seal the win.
Piercy spectacularly holed out from 228 yards to eagle the par-four fifth, then birdied the sixth, eighth and ninth to go 6up on Donald by the turn on a sunny but cool and breezy day at Dove Mountain.
Belgian Nicolas Colsaerts also landed a surprise when seeing off world number six Justin Rose on Friday.
Colsaerts, who lost in the opening round last year on his debut at the event, took control with three birdies in the first eight holes before sealing victory with a par at the short 16th, where Rose bogeyed.
Nicknamed the 'Belgian Bomber' because of his power hitting, Colsaerts will next face American Matt Kuchar, who beat Spaniard Sergio Garcia 2&1 in a closely contested match between two Ryder Cup players.
Ian Poulter, the 2010 champion, also advanced with a 3&1 victory over American Bo Van Pelt to set up a third-round meeting with South African Tim Clark, who beat Dane Thorbjorn Olesen 3&2.
Defending champion Hunter Mahan never trailed on the way to a commanding 4&3 win against South African Richard Sterne and he will take on Germany's Martin Kaymer in the next round.
Kaymer, who lost 3&2 to Donald in the 2011 Match Play Championship final, advanced by beating Spaniard Rafael Cabrera-Bello 2&1.