His eight-under-par round equalled the course record at Saujana's Palm layout, known as "The Cobra'", but will not count for record purposes due to the preferred lies in operation.
In another twist, fellow American Bo Van Pelt had shot a 59 in the pro-am Wednesday, but it does not count for the record books, while Mickelson himself carded a 59 at the PGA Grand Slam of Golf in 2004, a four-man invitational tournament which does not count towards the official money list.