In what had to be one of the best 18 holes of his career Els held a 4-up lead over the Scot after firing a 12-under-par 60 in the morning part of their 36-hole match.
Els had a remarkable eight birdies and two eagles on his way to what one would assume was a delicious lunch.
That Monty was only 4-down at the break was testament to his outstanding play as well. His 8-under 64 would have been good enough to lead in any of the other matches, but unfortunately came at the hands of the brilliant Els.
Though Els cooled off considerably in the afternoon, Monty was unable to mount a charge, eventually falling on the 31st hole to the world's No. 3 ranked player 6-and-5.
``Monty brings out the best in me,'' Els said. ``It's happened quite often and I wanted to say that to him when we were done. But I don't think it was the right time.''
Els moves on to meet Vijay Singh in the semi-finals, who was paired against Retief Goosen in a second-round match that was two-sided. Regrettably for Goosen, he was on the wrong side.
Goosen enjoyed being up most of the morning, his biggest lead coming at the 14th and 2-up. Singh, however, tied it up just before the break. A halve at the first hole following lunch would be the last time Singh didnt have control of the match.
He built the lead to 4-up with a couple of birdies and a Goosen bogey and finally knocked out the South African on the 33rd hole, 4-and-3.
Campbell, who finished his marathon match with Faldo early in the morning after the 43rd hole, took on defending champion Ian Woosnam. After halving the first eight holes, Campbell built a 4-up lead partly due to some costly bogeys by Woosnam.
Woosnam battled back to all square and even took a brief lead at the 22nd hole. But Campbell knotted the match with a birdie at the next, and then took the lead for good at the 29th hole.
Woosnam lost the match on the 34th hole, failing to win the hole and giving Campbell a 3-and-2 victory. Woosnam will take on Spains Sergio Garcia in the events other semi-final.
Garcia made a huge comeback against Padraig Harrington to finally post a 2-and-1 victory over the Irishman
Down as many as four holes, Garcia slowly climbed back in it and grabbed his first lead at the 25th hole after back-to-back birdies. Harrington, who was in the finals a year ago, couldnt equal Garcia birdies on the 27th and 30th holes and conceded the match on the 35th, 2-and-1.
Scores from the Cisco World Match Play Championship