P.S. Given these accomplishments I would say his -16 looked rather <yawn>...pedestrian.
33-under
• *Steve Stricker, 2009 Bob Hope Classic, 255 total, par-72
31-under
• Ernie Els, 2003 Mercedes Championship, 261 total, par-73
30-under
• *Pat Perez, 2009 Bob Hope Classic, 258 total, par-72
29-under
• Joe Durant*, 2001 Bob Hope Chrysler Classic, 259, par-72
• Tim Herron*, 2003 Bob Hope Chrysler Classic, 259, par-72
28-under
• John Huston, 1998 United Airlines Hawaiian Open, 260, par-72
• Mark Calcavecchia, 2001 Phoenix Open, 256, par-71
• Stuart Appleby*, 2003 Las Vegas Invitational, 259
• Phil Mickelson, 2006 BellSouth Classic, 260, par-72
(*First four rounds of 5-round tournament)