The 31-year-old Moore, who graduated from Cascade Christian High School, had a 13-under 197 total at TPC River Highlands after opening with rounds of 63 and 68. He won the CIMB Classic in Malaysia at the start of the season in October for his third PGA Tour title.
Baddeley had six birdies and a bogey in a 65.
Tacoma native Michael Putnam, Sergio Garcia, Scott Langley and K.J. Choi are tied for third at 11 under. Putnam shot a 1-under 69. He's aiming for his first career PGA Tour victory.
Moore has finished in the top 10 four times in eight starts at the Travelers.