I live in Fran Tarkenton's hometown, and I used to work for the local radio conglomerate which includes a sports talk statio. One of the guys from the morning show told me that Tarkenton has a reputation around town as "a bit of an *******." Maybe likability is overrated because Tarkenton was a great QB nonetheless.
IMO, it would be hard to find an athlete not like that. 99% of them are