American Snedeker has won seven times on the elite U.S. PGA Tour but looked more like a weekend hacker when he crashed to seven over after just four holes.
Starting his round at the 10th, he had back-to-back bogeys before a double on the par-five 12th followed by a triple-bogey seven on the 13th.
The world number 38 steadied his round with a couple of pars on 14 and 15 but dropped further shots on the 16th and 18th to sit last on the leaderboard at the turn, a yawning 11 strokes behind the early pacesetters.
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His misery continued on his second nine with dropped shots on the second, third, seventh and ninth holes, with the only bright spot of the day coming with a birdie on the sixth.
He ended the day tied 150th in the 156-man field.
South African Zander Lombard took advantage of more favourable afternoon conditions to shoot a five-under 67 to take a two-shot first round lead ahead of England's Mark Foster (69).
(Reporting by Ian Ransom; Editing by Sudipto Ganguly)
