Phil Mickelson has shot 24-under 189 through three rounds at the Waste Management Phoenix Open (TPC Scottsdale is par-71) and needs a final-round 64 or better to set a PGA TOUR record. Here are the low 72-hole scoring marks on TOUR:
| 254 | Tommy Armour III (64-62-63-65), The Resort at La Cantera (par 70), 2003 Valero Texas Open (26 under) |
| 255 | Steve Stricker (65-67-61-62), four courses (all courses, par 72), 2009 Bob Hope Classic (33 under) |
| 256 | Mark Calcavecchia (65-60-64-67), TPC Scottsdale (par 71), 2001 Phoenix Open (28 under) Russell Henley (63-63-67-63), Waialae CC (par 70), 2013 Sony Open in Hawaii (24 under) |
| 257 | Mike Souchak (60-68-64-65), Brackenridge Park GC (par 71), 1955 Texas Open (27 under) Tiger Woods (64-63-64-66), East Lake GC (par 70), 2007 TOUR Championship (23 under) |