But Woods came undone himself two holes later with a double-bogey six at the third hole.
Baddeley, trying to follow in the footsteps of compatriot Geoff Ogilvy as US Open champ, finished the day with a 10-over 80, tied for 13th on 292.
Baddeley was one of a series of would-be contenders who fell at "Chokemont," including Canadian Stephen Ames, Englishmen Justin Rose and Paul Casey and US player Bubba Watson.
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