PGA Tour rookie Jonas Blixt claimed his first title as a fourth straight sub-70 round saw him win the Frys.com Open by a stroke.
Remarkably, three players equalled the CourdeValle course record of 62 over the four days, but none of them could finish higher than fourth.
Instead, Swede Blixt became the third Tour rookie to claim a title this season as a four-foot par putt at the last saw him finish 16-under after a three-under final round, one ahead of Tim Petrovic and Jason Kokrak.
"It's unbelievable," said the 28-year-old. "I have no words right now. This is the biggest dream I've ever had."
Petrovic came from nowhere to challenge with a seven-under-par 64 which included an eagle at the par-five ninth, while Kokrak, like Blixt, shot 68.
Overnight leader Mallinger, who matched Nick O'Hern's first-round 62 with one of his own in the second round, unravelled somewhat, managing only a one-over 72 on the forgiving course.
Scotland's Russell Knox claimed a top-10 finish, his final-round 69 putting him in joint ninth on 12-under, one ahead of 2011 champion Bryce Molder.