Falcons RB Steven Jackson likely out 2 to 3 weeks

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.

#Falcons coach Mike Smith ruled out Steven Jackson this week. He said, "It's short term. Don't know if that's two or three weeks."
— D. Orlando Ledbetter (@DOrlandoAJC) September 17, 2013