BOONE, N.C. (AP) - Josh Vaughan ran for 133 yards and three touchdowns to help Richmond upset defending national champion Appalachian State 33-13 on Saturday in the Football Championship Subdivision playoffs.

The Spiders (11-3) advanced to the FCS - formerly Division 1-AA - semifinals for the second consecutive year. Richmond will face Northern Iowa, which defeated New Hampshire 36-34 on Saturday night, next Friday or Saturday.

Armanti Edwards threw for 323 yards and one touchdown and ran for another score for the three-time FCS champion Mountaineers (11-3). But Edwards also threw a career-worst five interceptions in the second half, leading to four Richmond scores.

Eric Ward also had a rushing score, and Andrew Howard and Brian Radford both added field goals for the Spiders.

Appalachian State took a 7-0 lead late in the first quarter, driving 95 yards - aided by a 15-yard face mask call, and a pass interference in the end zone on Richmond - before Edwards scored on a 2-yard run with 2:58 left.

The Spiders had a chance to tie the game with Vaughan scoring on a 13-yard run with 4.2 seconds left in the first quarter to pull the score 7-6. Howard bounced his extra-point attempt off the right upright.

Richmond then took the lead on Howard's 36-yard field goal with 9:05 left in the third quarter, with back-to-back interceptions by Seth Williams to set up TD runs of 1 yard by Vaughan and 5 yards by Ward to put the Spiders ahead 23-7.

The Mountaineers pulled within 23-13 on Edwards' 4-yard touchdown pass to T.J. Courman with 1:51 left in the third quarter, but Richmond took advantage of two more interceptions to add a 27-yard field goal by Radford and a 1-yard Vaughan TD run.