Has a non coordinator OL guy ever been successful head coach?

[Highline17]

I don’t know if you consider him successful but Bill Callahan.

 

[BoxingRobes]

You do not even have had to play the game to be a successful head coach of that sport.

 

[58straight]

He was a DC before becoming the HC at Wisconsin

You're right I always thought he coached OL but he was a linebackers coach first when I searched his Wikipedia

 

[miamimike305]

Its rare ive been saying this

If you had to put money on it. What are the odds Mario wins a title based on the theory though?

 

[miamimike305]

You do not even have had to play the game to be a successful head coach of that sport.

You’re right. Look at manny diaz.