McMillan, who finished fourth on last year's McDonald's Order of Merit, birdied holes 11 through 13 and added another on 17 to get to 10-under, good enough for a three-shot cushion over Patrick Moore (Cornelius, NC) and Dave Branshaw (Tampa, Fla.). Danny Norton (Richmond, BC) is four shots back at 6-under.
Play was suspended at 6:05 p.m. due due darkness with 43 golfers still on the course. They will finish their rounds Saturday morning beginning at 7:15 a.m.
More on the Canadian Tour
Full Field scores for the South Carolina Challenge