LINCOLN, Neb. (AP) — New Nebraska football coach Mike Riley says his players’ biggest challenge this spring will be learning the language of his pro-style offense.

The Cornhuskers opened practice Saturday. Riley split the team into two groups for separate 90-minute workouts so he could better familiarize himself with and evaluate the personnel he inherited from former coach Bo Pelini.

Riley says he liked the team’s enthusiasm and the execution was as good as he could have hoped for a first day.

Running back Imani Cross says transferring plays from the playbook to the field was a challenge.