How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Saturday100.0*Average seed
Orioles 11 Nationals 7 -0.6
Cardinals 10 Twins 2 -0.2
Blue Jays 7 Reds 6 +0.1
If winner is:HomeAway
Sunday100.0*Average seed
Reds vs Blue Jays-0.3+0.2
Wiz vs Nationals-0.3+0.1

What If

Chances based on how well the Nationals finish out the regular season.   Explain

100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs1234567Count
291-0In386229,688,159,358
280-1In1008,122,108,422
Total:In307037,810,267,780
Games Above .500
Chance Will Make Playoffs