Teams have schemed against WVU and thrown a bunch of quick and screen passes, but WVU (3-1) still hasn't met its pass-rush expectations.
Defensive end Bruce Irvin had WVU's only sack and that was in the season-opener against Marshall. He's been dealing with the expected extra attention after 14 sacks last season. The health and effectiveness of defensive tackle Julian Miller, who had nine sacks each of the last two seasons, has been a factor, too.
"I don't know what's going on," Holgorsen said. "We've got to keep working at it. Whatever the reasons are, they've got to overcome them. If there's frustration or where the effort level isn't where it needs to be, then we need to figure out how to get the effort.
"It's something we've talked about. It has nothing to do with coaching. It's the same guys, the same scheme, same everything, same kids, but that's just how it is.
"Maybe people are keying on them more or maybe the schemes are built in to the point they can't get to the ball, but regardless what the excuses are, our job is to put them in the best position to be successful. Their job as players is to work hard and be ready to play the game and give it everything they've got.
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ONE POSSIBLE fix is the addition of speedy linebacker Josh Francis, who unseated Casey Vance and got the start against LSU.
Francis, a 2010 junior college All-American who had 13 sacks in two seasons at Lackawanna (Pa.), is playing the weakside spot.
J.T. Thomas was an All-Big East first team pick there in 2010 with 73 tackles, seven tackles for a loss and 21/2 sacks.
Casteel said Francis, who had four tackles, played well and is part of a group still finding its way.
"We're not obviously where we were with those kids we had last year," Casteel said.
"Those kids were starters and really the core of a group that had been together three years.
"We just have to execute some things better. We'll go out and do something really well for two series and then the next series forget what happened.
"I think kids always have to become a little more consistent."
Contact sportswriter Mike Casazza at mi...@dailymail.com or 304-319-1142. His blog is at blogs.dailymail.com/wvu.