MEXICO CITY, MEXICO - MARCH 04: Rory McIlroy of Northern Ireland and Phil Mickelson stand on the 18th hole green during the third round of the World Golf Championships-Mexico Championship at Club de Golf Chapultepec on March 4, 2017 in Mexico City, Mexico. (Photo by Keyur Khamar/PGA TOUR)

MEXICO CITY, MEXICO - MARCH 04:  Rory McIlroy of Northern Ireland and Phil Mickelson stand on the 18th hole green during the third round of the World Golf Championships-Mexico Championship at Club de Golf Chapultepec on March 4, 2017 in Mexico City, Mexico. (Photo by Keyur Khamar/PGA TOUR)