Seattle Seahawks defensive end Bruce Irvin was suspended for the first four games of the 2013 season on Friday after the league announced he violated the NFL policy on performance-enhancing substances. Irvin will be eligible to participate in all offseason activities and preseason practices and games, but will be suspended without pay for the opening four games at Carolina, home for San Francisco and Jacksonville and at Houston. Irvin will be eligible to return to Seattle's active roster on Sept. 30 following the Seahawks' Week 4 game against the Texans, but only after losing a quarter of his salary for the season.