Manti Te'o is one of four draft picks who've signed contracts with the San Diego Chargers.
Te'o, the linebacker from Notre Dame, was picked by the Chargers in the second round.
Also signing four-year deals Thursday were third-round pick Keenan Allen, a wide receiver from California; sixth-rounder Tourek Williams, an outside linebacker from Florida International; and quarterback Brad Sorensen, a seventh-rounder from Southern Utah.
First-round pick D.J. Fluker, a tackle from Alabama, and fifth-rounder Steve Williams, a cornerback from Cal, remain unsigned.
A rookie minicamp runs Friday through Sunday.
(Copyright 2013 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)