UCLA head coach Jim Mora and offensive coordinator Noel Mazzone are used to working with quarterback Brett Hundley.
According to OC Register, Hundley averaged 160 carries during his time at UCLA. His replacement, freshman Josh Rosen, has also proven ability to run.
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But the same report argues that Rosen plays a different role with the offense this year. While Rosen is characterized with "sneaky athletic ability" in the report, coaches fear hard tackles that may injure the emerging star.
"I don't like him takes those hits," said Mora, in the report. "He doesn't have to prove his courage to anybody."
(h/t OC Register)