Chargers' Damion Square suspended 4 games for violating substance abuse policy

SAN DIEGO -- The depth behind unsigned rookie draft pick Joey Bosa took a hit, with the NFL announcing that San Diego Chargers defensive lineman Damion Square has been suspended without pay for the first four games of the 2016 regular season for violating the league's substance abuse policy.

Square will be eligible to return to San Diego's active roster on Monday, Oct. 3 following the team's Oct. 2 game against the New Orleans Saints. Square remains eligible to participate in all remaining preseason practices and games.

"I sincerely apologize to my teammates, coaches, the entire Chargers organization as well as the fans," Square said in a statement released by the team. "I made a mistake and take full responsibility. I look forward to returning in Week 5 and doing whatever I can do to help the team."

A source close to Square said his violation of the NFL's substance abuse policy was the result of a missed test, and he does not plan to appeal the ruling.

"While disappointed to hear the news today about Damion, we support and respect the league's decision," the Chargers said in a prepared statement. "We are confident that he will learn from this and what is expected of him moving forward."

Square, 27, had been a productive player for the Chargers during exhibition play, leading the team with two sacks. Square also recorded three tackles for loss and two quarterback hits in 45 snaps through two preseason games.

The fourth-year pro out of Alabama was on the practice squad the first eight weeks of the 2015 season, but was promoted to the active roster during the second half of last year. Square totaled six tackles, three quarterback hits and a fumble recovery, helping to solidify things up front for a San Diego defense that played better in the second half of 2015.