The Washington Redskins have signed fourth-round linebacker Keenan Robinson to a four-year contract. The 6-foot-3, 242-pounder from the University of Texas recorded 317 career tackles, 5 1/2 sacks, three forced fumbles, two interceptions, two fumble recoveris and 14 pass deflections. He was a second-team All-Big 12 selection. Robinson had 106 tackles, 10 for losses, one sack, a safety, 13 quarterback pressures and two forced fumbles last season for the Longhorns. Source: Scout.com