St. Louis, MO (Sports Network) - St. Louis Rams running back Steven Jackson will reportedly void the final year of his contract on March 12.

Thus, Jackson will test the free-agent market. The St. Louis Post-Dispatch reported the news on Monday.

Jackson, who turns 30 this coming summer, is set to make $7 million this season under his current contract.

The former Oregon State star has spent his entire NFL career in St. Louis since being drafted in 2004. Jackson, the Rams' career rushing leader, has rushed for 10,135 yards and 56 touchdowns.

Jackson carried the ball 257 times for 1,042 yards and four touchdowns in 2012. It was his eighth consecutive 1,000-yard rushing season.