Langley was unable to match the eight birdies he made during his superb round of 62 on Thursday as he recorded a birdie on the 17th and a bogey on the 15th on his front nine.
While his front was not much of a talking point, Langley's birdie was pretty impressive as he made a 30-foot putt.
Langley had a tad more success on his back nine despite kicking it off with a bogey on the second, which occurred as a result of him missing an eight-foot putt. The 26-year-old rebounded from his second hole blunder and finished his round on a high, with consecutive birdies on the sixth and seventh.
Joining Langley atop the leaderboard is Venezuela's Jhonattan Vegas, who hit a bogey-free round of 65.
Vegas began with birdies on the 12th and 17th before making three more on the second, seventh and ninth.
Seven golfers – Chad Collins, Bryce Molder, Danny Lee, Kevin Chappell, Greg Owen, David Hearn and Jonathan Byrd – sit one stroke behind Langley and Vegas after enjoying successful second rounds.
Former world number one Tiger Woods still remains in contention despite losing his cool on the 17th after his tee shot landed in the water.
Woods had a very quiet front nine as it consisted of a sole birdie. But, the same could not be said about his back nine as he registered three birdies and the same number of bogeys.
Sitting with Woods in tied 26th is world number three Bubba Watson, who followed up his first-round 67 with a 68.
Watson, who won the Travelers Championship prior to this, made four birdies and two bogeys during his round.
Meanwhile, defending champion Angel Cabrera missed the cut after carding a 72 at The Old White TPC on Friday, which consisted of two birdies and four bogeys.