Through two rounds – one on each of Sea Island Resort's two courses – Cole Hammer, Andrew Putnam and Harry Higgs lead the RSM Classic field with a score of 12 under.
In a unique format, this tournament has half of the field play the par-70 Seaside Course and the other half play the par-72 Plantation Course in the first round, before swapping for the second round.
After earning the solo lead by shooting an eight-under 64 on Thursday's trip around the Plantation Course, Hammer still produced seven birdies on the Seaside Course, but three bogeys on the front-nine allowed others to join him at the top.
Both Higgs and Putnam shot rounds of seven under, albeit on different courses. Higgs went bogey-free for a 63 at the Seaside Course, and Putnam went bogey-free until his final hole, blowing a chance to head into the weekend with the outright lead.
Of the five players to shoot better than seven under on Friday, all five did it on the Plantation Course, including Joel Dahmen with his eight-under 64 to jump up to a tie for fourth at 11 under, where he is joined by Sahith Theegala.
The other eight-under rounds came from South Korea's Noh Seung-yul, tied for fourth at 10 under, as well as Ben Martin and Will Gordon, one further back at nine under.
The round of the day came from Akshay Bhatia, following his three-over 73 with a nine-under 63.
Some of the bigger names in the field will not be participating on the weekend as former world number one Jason Day missed the cut by three strokes, and former Masters champion Danny Willett withdrew after his three-over opening round.
The remaining two rounds will both be played at the Seaside Course.