Posted by ESPN.com's Adam Rittenberg

Visitors to Michigan's largest city received yet another reminder Thursday of Ohio State's dominance in college football's greatest rivalry. 

An Ohio State fan purchased a billboard in downtown Detroit that commemorates the 2,000th day since Michigan's last victory in the Ohio State-Michigan series. The maize-and-blue billboard, seen here on The Columbus Dispatch's Web site, mockingly celebrates the milestone for Michigan.

The billboard, sponsored by friendsofwoody.com, reportedly is located next to Music Hall, not far from both Ford Field and Comerica Park. It will be there for only one day. 

Billboards are becoming the most common rub-it-in method for Big Ten fans. Michigan State supporters paid for several digital billboards during the week after the Spartans beat Michigan last fall.

I'm not a huge fan of these displays, and though the billboards can be funny, they come off as a little small time. But the Michigan-Ohio State rivalry runs deep, and no team has been able to celebrate the 2,000-day milestone since April 12 1928, when Michigan was in the midst of a six-game win streak against Ohio State.