Harbin, who plays for South Carolina, has shot rounds of 73-74–147 at Chenal Country Club. He’ll make the cut after the suspended second round is completed this morning.
Harbin is 11 shots behind leader Keith Mitchell (68-68–136), a Georgia golfer from Chattanooga, Tenn.
Knox, who won the Georgia Amateur Championship on Sunday in Roswell, shot 75-80–155 and will miss the cut, which is projected to be at 149.
Mitchell has a two-shot lead over Hunter Howell (71-67) and Brad Schneider (69-67).