Prefontaine Classic track meet at Hayward Field in Eugene on Sunday, June 8, 2008. Pole vaulter Brad Walker, of the US, to the crowd after his record-setting vault of 19-9.75. The world-leading clearance broke Jeff Hartwig's American record set in 2000 of 19-9.25 and also bested living legend Sergey Bubka's meet record of 19-6.25. Walker made two failed attempts at a world-record height of 6.15/20-2 and then called it a day.