We often associate busts with high-potential players who don't live up to outside hype in the early stages of their careers, but even experienced veterans fail to play up to expectations. Teams sign some of the biggest underachievers off the free-agent market. Buyer beware.
Certain players will fit best with specific teams, but several veterans come with major question marks regardless of their destination.
In many cases, a player's productive past gives him the benefit of the doubt, but aging and a sharp decline in performance provide warnings that indicate teams should look elsewhere. Some middle- to low-tier free agents will sign lucrative deals because of the limited talent available at their respective positions.