Titans running back Chris Johnson hasn’t played in a playoff game since his rookie season in 2008.

If something doesn’t change, he thinks the drought will continue.

That “something” is the success in the run game, or lack thereof.

“If the running game doesn’t get going, this is going to be another non-playoff team,’’ Johnson said this week. “But I think we have the players in here to do it, and I think we’re going to be OK.”

Johnson has just 110 rushing yards in the last four games combined after racking up 256 in the first three weeks of the season. He’s averaging just 3.2 yards per carry on the season. Johnson averaged 4.9 yards per carry during the ’08 season, and has averaged at least 4.0 yards per carry in each of his first five NFL season.

The addition of center Brian Schwenke in the starting lineup appeared to make a positive difference in the team’s last game against the 49ers. Johnson appeared to have more running room when he got his hands on the football, but because the Titans fell behind, he didn’t have many opportunities. He had just nine carries for 39 yards in the game.