A four-star defensive back out of Proviso, Illinois (where Kyle Prater also attended), Cooper chose Nebraska over a late push from Notre Dame and the in-state Illini.
Carnes, who was off most recruitniks' radar, made a last second switch to Bo Pelini's team this morning.
It's been a relatively quiet recruiting cycle for the Huskers compared to their brethren in the Big 12, much to the chagrin of some in the fanbase.
But Carnes' commitment adds to an increasingly competitive depth chart in Lincoln, and Cooper aids Nebraska's defensive backfield, which must replace starters Larry Asante and Matt O'Hanlon next year.
Couple these two with an announcement for the Huskers from four-star DE Owamagbe Odighizuwa, and you've got yourself an outstanding class in the space of a day.
That said, Cooper's decision has to be a disappointment for Notre Dame, who has landed Matt James but appears out of the loop for Dietrich Riley and Seantrel Henderson, the two big names still on the list.
Stay tuned for more coverage of signing day at B/R and MaxPreps .