Keenan Robinson was hurt his first two years, played solidly his third and then disappeared in his fourth and was beaten out by a street free agent Mason Foster. He is likely to be a depth signing in free agency for another club.
Mason Foster a street free agent?
2011 season
Foster was selected in the 3rd round (84th overall) by the Tampa Bay Buccaneers in the 2011 NFL Draft. He was fined $20,000 for a hit on Chad Ochocinco following the second preseason game. Ochocinco offered to pay the fine for him, as he disagreed with the league's decision, but the league stated that he would not be able to. Foster began his rookie season as the Buccaneers' starting middle linebacker. Foster would have a solid rookie campaign at Middle linebacker compiling 84 Combined tackles, 2 Quarterback sacks, 1 forced fumble, and 1 interception.
2012 season
Foster's sophomore campaign would yield yet another strong outing. Along with rookie outside linebacker Lavonte David, Foster would post solid numbers only second to David creating a strong linebacker corps. His stats for 2012 were 105 combined tackles and 2 quarterback sacks.
2013 season
For his 3rd straight season Foster would post decent numbers only second to fellow Buccaneer Lavonte David. His 2013 season saw his tackle production decrease to 92 combined tackles, but he again posted 2 Quarterback sacks followed by 1 forced fumble and 3 interceptions with 2 of the interceptions being returned for touchdowns.
2014 season
With the arrival of New Head Coach Lovie Smith and the "Tampa 2" defense Foster would see a decline in his over all play as well as a shortened season due to injuries. The complicated system and injuries sustained late in the year saw a dramatic drop from his usual prowess only compiling 62 combined tackles all year with no interceptions, quarterback sacks, or forced fumbles feeling very out of place in the Tampa 2 resulting in the end of his Buccaneers career.
Chicago Bears
On March 24, 2015, Foster signed a one-year deal with the Chicago Bears. On September 5, 2015, Foster was waived.
Washington Redskins
2015 season
Foster signed with the Washington Redskins on September 29, 2015. He made his first start with the team at inside linebacker on a Monday Night Football game against the Dallas Cowboys on December 7, 2015.