Once again there is a clear gulf in quality between this week's two tournaments, but for once the European Tour can claim a slice of the glory with the WGC-Mexico Championship being a co-sanctioned event with the PGA Tour. Other short odds to win are Justin Thomas (8/1), Jon Rahm (11/1) and Jordan Spieth (11/1).
Joining Rose in the star-studded field set to tee off on Thursday at Chapultepec Golf Club are reigning PGA Championship victor Justin Thomas, world No 2 Jon Rahm and 2017 Race to Dubai victor Tommy Fleetwood. He also won last year, which was the first year this event was held at this course.
However he stumbled at the 10th and 17th to offset gains at 11 and 15 to finish even for the nine and likely pleased enough with his play.
"I felt like it's close, it's not quite there but you know, I mean, I felt like everything's pretty close but yeah it's hard to improve on from where I was playing a year ago".
"I've had four weeks off, so sometimes that positions you, you come out slightly unsure of exactly where you're going to be after four weeks, but I'm coming in fresh", quipped the 37-year-old on europeantour.com.
Defending champion and World Number One Dustin Johnson is on the same mark as Leishman after a roller coaster round which featured a double bogey and two bogeys against six birdies. Mickelson has 28/1 odds for this week and I think he can possibly pick up his first win since 2013. He also performed well at this course a year ago, placing seventh, four shots from winning. Justin Thomas - last week's victor of the Honda Classic, said: "I think this is going to be the best week for [TrackMan's] branding, for sure, versus any other week. "To play as well as I did and shoot a good score against the world's best players and be right up there, I" m just delighted".