The Rams has been having problems holding fort at the right guard position since All-Pro Adam Timmerman retired. Since then it was a revolving chair on that position Richie Incognito man the position but character issues cut his stay in St.Louis short; Mark Setterstrom also did good manning the position but injuries keep creeping up and decided to let him go as a free agent. Then there is the project on using utility man OG/OT Adam Goldberg and OG John Greco. With the Rams tendering Greco shows that they still have some confidence on him and as football expert says "he just need some competition to prove himself".
Personally if given the chance to compete, John Greco might have found their answer to that position within the roster all along. Not drafting an interior lineman during the 2011 NFL draft has only enforced that Greco will be given a chance to compete although the Rams will try to add another veteran via free agency to add some depth.
The Rams basically need to upgrade the interior as a they where able to draft the Rams bookend tackles in Rodger Saffold and Jason Smith and they will be holding fort for quiet sometime. Center Jason Brown has been the anchor and the de-facto leader of the group since he was signed as a free agents in 2009 as he has shown consistency with his play.