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Richardson has started all 6 games for the Rams this season.
The only other realistic move I see the Rams making at the trading deadline would be adding an offensive lineman. The team has had just two players start every game on the line so far this season: Barry Richardson and Harvey Dahl.
It's been a unit riddled by injuries, and the guys who are there now have risen to the occasion. Sam Bradford has been sacked 18 times this year, and only six times in the last three weeks.
The key to this consistency in play is consistency in the starting lineup. Wayne Hunter and Quinn Ojinnaka have established themselves as mainstays on the left side of the line, and they have improved the overall play of the offense.
Part of that improvement has come in run protection. The line has done a good job of executing blocks, especially when Daryl Richardson breaks to the outside and the linemen have to shift over in protection.
So are the Rams in dire need of offensive line help at the moment? Rodger Saffold's initial diagnosis was a third-degree MCL sprain and a month away from the field. Week 6 marked one month since Saffold was taken off the field against the Redskins, and he still hasn't seen any playing time.
However, as long as the current unit stays healthy, the offensive line can only continue to get better.
That being said, don't expect St. Louis to make any moves at the trading deadline this year.