Eight NFL seasons was apparently enough for former Vol Arian Foster.

The 30-year-old running back is retiring, according to his agent, Mike McCartney, who tweeted Monday: "Congrats to Arian Foster on a great career! What a run he had starting with a magical 2010 season. Proud of both the player and the man!"

"This is a beautifully violent game and the same reason I loved it is why I have to walk away," he wrote in an announcement tweeted out by Uninterrupted. "That bittersweet taste will linger with me, but on my next journey, I get to carry those memories with me. Hopefully.lol"

He closed the message with two fingers raised in the peace sign.

Foster was a stellar performer when healthy.

He eclipsed 1,200 rushing yards four times with the Houston Texans and led the NFL with 1,616 yards on the ground and 2,220 from scrimmage in 201

However, he often dealt with nagging injuries, including a hamstring this season that limited him to four games and 55 rushing yards during his first year with the Miami Dolphins. And with Jay Ajayi's emergence in recent weeks, Foster was probably ticketed for a supporting role.

The Texans' all-time rushing leader (6,472 yards), Foster finishes with four Pro Bowl appearances, 6,527 career rushing yards and 68 touchdowns.

While playing for UT in the mid 2000s, Foster finished second on Tennessee's all-time rushing list with 2,964 yards and third in career all-purpose yards with 3,880, according to the UT Athletic Department.