How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 8/10100.0*Average seed
Bayhawks 16 Hounds 14 -0.1
Nationals 12 Outlaws 18 -0.0
If winner is:HomeAway
Week of 8/24100.0*Average seed
Bayhawks vs Nationals-0.4+0.6

What If

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

100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678Count
101-0In1004,599,019,427
90-1In1006,358,595,389
Total:In425810,957,614,816
Games Above .500
Chance Will Make Playoffs