Steven Jackson will probably miss two or three weeks. (Stacy Revere/Getty Images)
Atlanta Falcons running back Steven Jackson will likely miss two to three weeks with a thigh injury, reports the Atlanta Journal-Constitution's D. Orlando Ledbetter on Twitter.
Jackson left with the injury in the first quarter of Sunday's game with the Rams, shortly after scoring a touchdown against his former team. Jackson, who signed with the Falcons this offseason, ran 11 times for 77 yards in the season opener against New Orleans.
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Jacquizz Rodgers and Jason Snelling are expected to fill Jackson's role temporarily.