San Diego: A stunned Brandt Snedeker experienced a roller-coaster ride of emotions on his way to an unexpected playoff victory over fellow American Kyle Stanley in the Farmers Insurance Open at Torrey Pines on Sunday.

Just over an hour after believing he had secured second place in the PGA Tour event, Snedeker took advantage of a last-hole blunder by Stanley in regulation to triumph for a third time on the US circuit.

Stanley had been three strokes in front playing the 72nd hole on the challenging South Course, but ran up an ugly triple-bogey there. He then missed a five-foot par putt at the second extra hole to hand Snedeker the title.

"It was a crazy day," Snedeker, 31, told reporters. "I went through a whole range of emotions over the last two days, let alone in the last hour-and-a-half to be sitting where I am…

"When I had the second chance, I really had to get myself refocused and realise that this tournament is anybody's now, now that I was in the playoff. If anybody had an advantage, I did, because I had done that before."

Snedeker won last year's Heritage Classic in a playoff with Luke Donald.