The Monday morning quarterbacks are at it again.

Last week the Web was all atwitter over the Motor City Shakedown – the postgame handshake skirmish between Lions coach Jim Schwartz and 49ers coach Jim Harbaugh.

This week the great debate is whether Lions defensive tackle Ndamukong Suh is a dirty player – this coming after Falcons players said Suh and teammate Cliff Avril taunted Atlanta quarterback Matt Ryan when he was on the turf with an injured ankle Sunday. (MORE>>>)

Suddenly, the Detroit Lions have major issues at running back.

Detroit's trade with Philadelphia that exchanged seldom-used veteran running backs Ronnie Brown and Jerome Harrison has been voided.

Two league sources told ESPN NFL Insider Adam Schefter that the trade was voided because Harrison has previously undisclosed health issues.

Brown arrived in Detroit but never got to practice. (MORE>>>)

Barry Sanders represented the past. Calvin Johnson, Matthew Stafford and company represented the present (and from the looks of things, the future too). And the Detroit Lions and their fans just plain represented on national television Monday night.

Detroit made the most of its first appearance on “Monday Night Football” in a decade. The largest crowd ever at Ford Field (67,861) actually delayed the national anthem with their chants of “Bar-ry! Bar-ry!” after the Lions’ legend took part in the coin flip. (MORE>>>)