After being informed he would be released by the Houston Texans, linebacker Brian Cushing has announced his retirement from the NFL. The former NFL Defensive Rookie of the Year made the announcement on his Instagram account and included a lengthy, heartfelt caption. Cushing was selected No. 15 overall out of USC by the Texans back in 2009. He made the Pro Bowl once and earned two second-team All-Pro nods for his play.