You're saying there is no possible way for a player to get 48 minutes in a blowout?
This is correct.
Blowout = Result with at least 20 points difference, is that right?
Well, if you take only 5 players to the match, they'll probably play 48 minutes each (unless they're fouled out or injured, of course)
We have both said a lot of things that you are going to regret.