Video killed the radio star, and Trent Richardson killed the market for running backs in the NFL Draft.

This week, Richardson took another turn toward becoming a draft bust of Leafian proportions when the Indianapolis Colts announced he had been suspended for their last two playoff games.

In fact, Richardson may wind up even more of an embarrassment than Ryan Leaf or JaMarcus Russell due to the fact he cost not one but two teams a first-round pick — the Browns, who took him third overall in 2012, and the Colts, who traded a first-rounder to get him after Cleveland gave up on him after one year.

His biggest legacy could turn out to be one that affects every running back who comes up after him.

Teams were so scared off by overpaying for running backs last year that one wasn’t drafted until the Titans grabbed Bishop Sankey with the 54th overall pick.

Granted, last year wasn’t a very deep draft class for running backs. It’s a different story this year as there appears to be a glut of players who can make an impact in someone’s backfield.

Just don’t expect many of them to go in the first two rounds.

Only one of the league’s top 10 rushers this season was drafted in the first round — Marshawn Lynch, who was taken 12th overall by Buffalo. In 2007.

In fact, Lynch is the only top 10 running back who was even taken with one of the top 50 picks in the draft. So it’s quite possible that no one other than Wisconsin running back Melvin Gordon will be taken in the first round this year.

That said, there are plenty of backs who can make impacts as rookies next season.

Georgia’s Todd Gurley has the potential to be a lot like Frank Gore – a guy whose draft stock only slips because of a knee injury.

Miami’s Duke Johnson, Indiana’s Tevin Coleman, Nebraska’s Ameer Abdullah, Alabama’s T.J. Yeldon, South Carolina’s Mike Davis and Boise State’s Jay Ajayi could provide major value in the late-second or third rounds.

And it could run deeper than that. Our own Charlie Bernstein is high on Minnesota’s David Cobb, who is a projected late-rounder at this point but has had a strong Senior Bowl week.

This year’s draft class could be as fertile for running backs as last year’s was for wide receivers. But thanks to the failure of Trent Richardson and success of backs taken in the second round or later, don’t expect to see them taken off the board early.