Jordan Spieth was not among them. "I ended up making bogey there and par on the par-5 13th, so still felt like I was very much in control".
Kuchar said accurate driving had been the key to his lowest opening score in almost two years.
Champ, going for his second victory this season, played in the morning and had a 62 with a bogey on his final hole.
"Yesterday was kind of a bogey-free day and just easy, and everything else today was about the same", Kuchar said (via PGA Tour.com).
After round one, Lee was in a 15-way tie for fourth, one shot back from the American trio of Matt Kuchar, Kramer Hickok and Dominic Bozzelli.More news: Prima Games is shutting down after 28 years
Kuchar surged into the mix with five straight birdies on the front nine.
Champ won the Sanderson Farms Championship two weeks ago and his rapidly building fan base as a result of his exceptional length from the tee will build further this week. Playing his second straight week in the fall - and his last tournament before his wedding - Spieth traded birdies and bogeys and had to settle for an even-par 71, leaving him in need of a good round Friday just to stick around for the weekend.
"It's not a bomber's course", Champ said.
"Just to be able to place my ball right in the fairways and on the greens and make the putts when I needed is great", he said.
An area renowned for its wild weather - rain out of nowhere, plenty of wind - has seen sunshine and calms for two days, and it's reflected in the scoring.More news: Austria Suspects Colonel Spied for Russian Federation for Decades
Lahiri had birdies on second and fifth before he dropped a shot on Par-5 seventh but a birdie on eighth meant he turned in two-under.
Three-time major victor Jordan Spieth, playing his last tournament of the calendar year, missed the cut.
The large group at 65 included defending champion Patton Kizzire, who had back-to-back eagles, and Abraham Ancer, who this week reached No. 98 to become the first Mexican golfer to crack the top 100 in the world ranking.
Jutanugarn tops field after 2nd round at Blue Bay: HAINAN ISLAND, China - Top-ranked Ariya Jutanugarn shot a 4-under 68 to take a four-stroke lead at the halfway point of the Blue Bay LPGA tournament.More news: Traces of acid, chemicals found in Saudi consul’s home