Ryan Shazier of the Pittsburgh Steelers looks on during the game against the Baltimore Ravens at Heinz Field on October 6, 2019 in Pittsburgh, Pennsylvania. (Photo by Joe Sargent/Getty Images) PITTSBURGH - Pittsburgh Steelers linebacker Ryan Shazier announced his retirement on Wednesday, nearly three years after a severe spinal injury forced the two-time Pro Bowler to put his career on hold.The 28-year-old said in a social media post that while he still loves the game, it is time to get on to the next chapter in his life.“Football gave me everything I wanted and more,” Shazier said. “It taught me about hard work, dedication.