THE END OF THE ROAD FOR MARVEL SMITH

Marvel Smith, a two-time Super Bowl champion and 2004 Pro Bowl selection, has announced his retirement from the NFL. Smith, who signed with San Francisco in March after nine years with the Steelers, was slowly recovering from offseason back surgery and never posed much of a threat to Niner RT Adam Snyder during the preseason.A second-round pick of the Steelers in the 2000 draft, Smith played in 111 games, starting 108 of them, over his nine-year career. But injuries would hamper the tail end of his time in Pittsburgh, causing him to miss 11 regular season games in 2008 and four in 2007.In an interesting twist, it's been speculated that the 49ers' signing of Smith may have caused a domino effect that landed them holdout WR Michael Crabtree instead of gifted rookie lineman Michael Oher:The 49ers knew signing a nine-year veteran with a back problem was risky; general manager Scot McCloughan said at one point that Smith had a 50-50 chance to return to his Pro Bowl ways. Obviousl...