HUNTINGTON, W.Va. -- Central Florida defensive lineman Victor Gray is pretty direct when he evaluates Marshall's offense.
"This is probably the best offense we've faced all year," he said.
The numbers don't lie. None of UCF's first seven opponents come within 100 yards of the Thundering Herd's average of 568.43 yards per game. Only unbeaten Ohio State at 39 points per game comes within 13 points of the Marshall's 43.13 per game.
The Knights (5-2, 3-0) enter a crucial Conference USA matchup in Huntington against Marshall (3-4, 2-1) at 8 p.m. Saturday (CBS Sports Network) with the task of slowing down a Herd offense that no opponent has impeded this season.
To do it, the Knights need to return to their usual standards on defense, Gray said.
UCF has won its last two games - 38-31 in double overtime over Southern Mississippi and 35-17 over Memphis - but Gray doesn't feel the defense has lived up to its potential.
Gray said missed tackles and missed assignments have cropped up more than he likes.
"I know we're 5-2, but some of those wins feel like losses when you're out there not executing what the coaches are calling and doing your job," said Gray, a 6-foot-4, 267-pound redshirt junior tied for the team lead with 6 1/2 tackles for loss. "You don't want to win and it feel like a loss.
"We have to get more hats to the ball. There's no sense in just one person making the tackle. You need 11 people to the ball, and that's how you make a tackle."
Still, the Knights remain C-USA's top defense, allowing a conference-low 352.9 yards and 22 points per game. They've been extremely effective against the pass, allowing just six touchdowns and an average of just 200.9 yards through the air.
Holding Marshall to those averages won't be easy. The Herd thrives in the air, with its quarterbacks throwing for a C-USA-best 2,730 yards and 22 touchdowns.