Updated

Conway, SC (SportsNetwork.com) - Coastal Carolina could have stewed for the last two weeks over a blocked field goal attempt on the final play of the regular season, which spoiled its perfect record.

Instead, the Chanticleers went out and did something about.

Seventh-seeded Coastal took its frustration out on Richmond with a 36-15 rout in the second round.

Coastal (12-1) will travel to second-seeded North Dakota State for the national quarterfinals next weekend. A year ago, the Chanticleers fell to NDSU, 48-14, in the final eight.

The only blemish on Coastal's record was the 15-14 loss to Liberty to end the regular season on Nov. 22. The Chanticleers had a 24-yard chip shot blocked to end that game and were forced to share the Big South Conference title with Liberty.

But coach Joe Moglia's squad, coming off a first-round bye, played with focus in ending Richmond's season one week after the visiting Spiders (9-5) eliminated Morgan State from the playoffs. The Chanticleers rushed for 316 yards to overcome Richmond quarterback Michael Strauss' 402 passing yards.

Coastal Carolina clung to a 6-0 lead late in the second quarter until they capped an 11-play, 58-yard drive with Alex Ross' 13-yard touchdown pass to tight end Craig Weick with 33 seconds left in the first half. Austin Cain ran in the two-point conversion and the Chanticleers had a 14-0 halftime lead.

It got much worse for Richmond in the third quarter. Andre Johnson scored on a 9-yard run to give Coastal a 21-0 lead at the 12:13 mark.

The Spiders answered with Strauss' 76-yard touchdown pass to Brian Brown to pull within 21-7. But Henderson broke off a 50-yard touchdown run on the Chanticleers' ensuing drive and Ross scored from 1 yard out just before the end of the quarter to push the lead to 36-8.

Henderson finished with 134 yards on 19 carries and Ross was 22-for-41 for 171 yards and a touchdown, adding 52 yards on the ground.

Senior linebacker Quinn Backus was dominant as he led the Coastal defense with 10 tackles, a sack, a forced fumble, a fumble recovery, 1.5 tackles for losses, two pass breakups and two quarterback hurries.

Richmond entered the game ranked No. 1 in the FCS on third down conversions, but the Spiders went 2-for-13.