Last year Urban had the youngest team in FBS and beat Michigan & Harbaugh for the second time in a row. This year the tables are turned and Michigan is young, while OSU is more experienced and also adds Kevin Wilson. It seems if Harbaugh loses again that people will begin to talk about him being on the hot seat. 3 consecutive losses in THE GAME with no prior wins.  

Meyer already retired Hoke. It seems likely to me with the rabid fan bases that 4 losses would be an out. I think hot names that could do any better than Harbaugh are very thin, so wouldn't be surprised to see more short tenures up north. 

If Urban is winning it seems the likelihood of him staying goes up. I'm betting 4. I bet he goes through 4 coaches up north.