LINCOLN, Neb. (AP) — Nebraska defensive back Charles Jackson will undergo minor arthroscopic surgery on his knee and will miss the rest of spring practice.

Coach Mike Riley also announced Saturday that cornerback Daniel Davie probably would miss a week of practice with an ankle injury.

Jackson and Davie were injured on consecutive plays during coverage drills on Wednesday. Riley said Jackson will be ready for summer conditioning.

Jackson was in line for work as a nickelback last fall but missed the entire season because of a torn anterior cruciate ligament. Davie is a returning starter.