Jim Harbaugh may have subtweeted Ohio State

Jim Harbaugh's Twitter thought of the day may have been a shot right at the heart of Big Ten rivals Ohio State. 

The Michigan head coach tweeted a Sir Walter Scott quote on Saturday that seemed to refer to recruit Mike Weber committing to the Buckeyes on National Signing Day only to have running backs coach Stan Drayton leave for the Chicago Bears a day later. 

Mark Pantoni, Ohio State's director of player personnel, did not take too kindly to the jab and had an answer for Harbaugh. 

The Ohio State-Michigan football rivalry is alive and well.