Safety Nate Fellner seems like a laid-back dude in casual situations.
When it comes to football, he is set at knocking the hands of a grandfather clock with his crushing licks.
Sometimes, that all-or-nothing aggressivness gets him in trouble - like when he hits - and misses - rather than tackles. Or most recently, when he does not follow UW coach Steve Sarkisian's martial law of fall camp.
Case in point: The second of two-a-day practices Wednesday night.
After a couple of days of excessive live hitting, including the team's first scrimmage Tuesday, Sarkisian decided to keep all the action "up" - meaning a defender could deliver a pop, but no tackles would go to the ground.
Fellner apparently forgot the rules, because he went hard and low at a teammate during a play or two.
After the last one, Sarkisian had seen enough. He barked. He yelled. He gave Fellner the stink-eye death glare for minutes at a time.
And finally, in one big swoop, he sent the junior from Fresno, Calif. to the east end zone - to stand by himself midway through practice, and never return.
Rarely has Sarkisian seethed in that manner. He usually gets out his gripe quickly, then moves on. Not this time.
The tension lingered so long, cornerbacks coach Demetrice Martin and safeties coach Jeff Mills went down to counsel Fellner, who seemed more stunned than anything.
Twenty minutes after practice, Sarkisian met with the media. By that time, he has obviously flushed some of his frustration.
"I love Nate Fellner. I love him," he said in a fatherly tone.
"That's what makes Nate unique - he's a got a real streak in him that makes him special, and he's tough. But he's got to play within the guidelines and parameters that we set for each practice. It wasn't a scrimmage tonight, so we had to stay up."
So Sarkisian was over the whole thing?
"Oh, yeah. I'm over it. I love our guys," Sarkisian said. "But we're learning, we're teaching. And we've got to learn."
* Fellner also has another thing to worry about - the emergence of Justin Glenn.
Glenn played in the first five games of the 2009 season - his last being a start at Notre Dame where he suffered a broken leg trying to tackle receiver Golden Tate.
This fall camp, Glenn is not only moving as well as he had before the injury, he is seeing the field extremely well. Proof of that was his interception of a Keith Price pass Tuesday night.
While at the outset of fall camp, the free safety position appeared to be Fellner's to lose ... well, the grasp is loosening.
"He really does look good," Sarkisian said of Glenn. "I think he is playing without fear."
* In 2009, Erik Folk converted on 18 of 21 field-goal attempts, and received a great deal of praise from his coach.
Last season, he was 13-for-20 - which prompted Sarkisian to note before fall camp he wanted to see more from the senior.
How does Folk feel about his form?
"I am still working on a few things, trying to perfect them," Folk said.
The placekicker said the two things he is working on is trying to find more of a natural leg swing, and keeping his eyes in back of the ball before he kicks.
Folk did make a 27-yarder in the team's last period Wednesday, which focused on overtime.
* Quick-hit notes: Price was 9-of-13 for 85 yards and an interception during 11-on-11 stuff Wednesday, and backup Nick Montana was 5-of-10 for 118 yards, including a 73-yard touchdown strike to DiAndre Campbell. ... Something defensive coordinator Nick Holt and the coaches will experiment with over the next few days is switching John Timu to the strong-side linebacker position in place of Princeton Fuimaono. Timu is faster and a little longer-armed to cover the tight end. … Cornerback Quinton Richardson (high left ankle sprain) was out of his boot and walking around better at practice Wednesday. ... The punting battle between Kiel Rasp and Will Mahan should be decide shortly after the scrimmage Saturday. They are still in a dead heat. ... Sarkisian will attend the funeral of Fred Petersen, his former coach at West Torrance High who died last weekend, Thursday back in California. "He is family to me," Sarkisian said. Subsequently, practice has been bumped back to 4:30 p.m.