"The golf I've played the last three matches really has been very impressive, even to myself, " he said.
Mickelson dominated from the outset, opening with back-to-back birdies before going 3-up after three holes.
Rahm lost only one of the 27 holes he played in his 6-and-4 victory over Charles Howell III and his 7-and-5 victory over Soren Kjeldsen in the quarterfinals.
The veteran will be more concerned that his defeat by Rahm could signal a changing of the guard in Spanish golf rather than spend too much time reflecting on his woeful mistake.
Haas and Johnson each led 3-up after nine holes but saw their matches tighten quickly before they advanced.
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Schumer's announcement Thursday came on the final day of Gorsuch's confirmation hearing before the Senate Judiciary Committee. There's also an important political goal that can be served by elevating this controversy, even if Gorsuch can't be stopped.
Mickelson had three birdies on his round while Leishman, the victor last week at the Arnold Palmer Invitational, conceded three holes after poor shots left him out of position.
"I hit some good shots. and drove it well. Obviously, representing Spain, we want as many Spaniards to make it as far as possible", Rahm said. Now he's two victories away from becoming the first player to sweep the four World Golf Championships.
World number one Dustin Johnson and five-time major victor Phil Mickelson advanced to the knockout rounds of the World Golf Championships Match Play Championship with impressive triumphs on Friday. His tee shot on the par-3 11th hit the rocks and went into the water. He fired a sparkling 4-under thru 14 holes in his dismantling of McGirt in the round of 16. And then he had to settle for par after leaving himself in an awkward spot, only to watch Noren hole a 40-footer to tie the match.
During an interview with ESPN, 22-year-old Rahm said: "Once I made that birdie [on No. 3], I got a lot of confidence on my swing and played really, really good golf from then on, Honestly, nearly ideal".
Jon Rahm, standing at 6-foot-2 and weighing 220 pounds, towered over Kjeldsen both on the course and on the final scoreboard. "It really amazes me that I'm doing this, and that I'm playing the semi-final tomorrow". Then he had to go 18 holes to beat Kevin Na in the fourth round before taking on Mickelson. "I missed one single shot, and it was the second shot on (the ninth hole)". It took him just four tournaments to earn his PGA tour card, and 12 events to earn his first victory in the Farmers Insurance Open at Torrey Pines. "I definitely need to be in the fairways and put the pressure on him, make him attack".