But this is O'Brien's first stop ever as a head coach.
"He has a very clear vision for us as a staff, what his vision of Penn State football is and what he expects of us," Roof said. "As a leader, he's done a great job of letting us know exactly what's expected of us."
Recruiting for the 2013 class appears to be going well so far, too.
Pamela Burg, of Harrisburg, helped organized the flower drop-off at the Paterno statue, part of the reason the lifelong Penn State fan attended her first spring football game.
"And welcoming coach O'Brien and supporting" the players, she said. "Especially those kids in the new class that even after this scandal, this controversy, decided to come to Penn State. That really takes a pretty mature man to want to do that."
O'Brien also instituted a new scoring system for the spring game to pit the offense against the defense instead of dividing the team into two mini-squads. The defense scored points, for instance, for a turnover or sack.
The defense, wearing blue, beat the white-clad offense 77-65.
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