The news broke earlier today about Gregg Williams being reinstated by the NFL and joining the Tennessee Titans coaching staff. He was the lead suspect in the Bountygate case and missed the entire 2012 NFL season with his suspension. The Bountygate situation only strengthened the discussion about the concussion problem in the NFL, which leads to this question: what is the biggest problem in American sports? Is it the NFL concussion issue? Maybe the use of performance-enhancing drugs in Major League Baseball?