The Sooners reported to camp in Norman on Wednesday.
Bob Stoops addressed his team using the phrase "no excuses."
Oklahoma is the Big 12 preseason favorite again this year so expectations are high. But the Sooners have to replace four All-Conference starters on defense.
We asked legendary linebacker Brian Bosworth for his thoughts.
"I'd like to see a true linebacker stand up and start to take hold of that position,” said Bosworth. “We've had Striker in the past, but he's kind of a hybrid on the outside, just a pass rush specialist. The position of linebacker has changed over the last few years, so you really do need a guy that can play strong safety like position in coverage and also play inside the box when it's necessary."