I'll try to explain this the best way that I can. We are currently 7-4, if we are saying 20-10 is where we need to get, then 13-6 would have to be our remaining record.
Virginia is a home game, one in which we are favored to win. If we were to lose this game and fall to 7-5, we then need to go 13-5 to finish the season in order to reach the above mentioned 20-10 record.
With games @UK, @LSU, UF x2 and Missouri x2 the room for error becomes ice thin with a loss to Virginia Monday, as that only allows for 5 more losses before that goal becomes unattainable.
This isn't some formula where we have 19 games left and each one matters an equal percentage. There's certain games that you can lose and be ok (at Florida), and others that if you lose you really put yourself in a bad spot (home to Virginia).
It's the ole win and advance. Each game we win the room for error increases, the pressure decrease, and the more likely that 20 wins become.