The story by itself shouldn't mean much to Rams fans.
Smith, after all, started only two games in 2012 while trying to overcome serious knee injuries. He was never a player the Rams were counting on for significant contributions.
Smith's retirement is notable in another context, however. His name tops what should be a relatively short list of players to disappear from the game in 2013 after making at least one start for the Rams last season.
Last season, 16 players made zero regular-season appearances in an NFL game after starting at least once for the Rams in 2011. One such player, linebacker Chris Chamberlain, probably would have played with New Orleans had he not suffered a knee injury. Many of the others languished for lack of interest.
A quick look at the list of 15 players beyond Chamberlain: Adam Goldberg, James Hall, Fred Robbins, Tony Wragge, Jason Brown, Cadillac Williams, Rod Hood, Al Harris, C.J. Ah You, Mark Levoir, Ben Leber, Nick Miller, A.J. Feeley, Mike Sims-Walker and Mark Clayton.
Hall, Robbins, Goldberg, Wragge and Brown started at least half the games in 2011. Some others found opportunities because the Rams suffered from an unusual number of injuries that season.
Still, as the Rams improve and build around younger players, including quite a few drafted in the first two rounds, they should have less room on their roster for stopgap veterans. At receiver, for example, none of the Rams' players is even 26 years old. Players such as Smith, Sims-Walker and Clayton wouldn't fit.