How are these numbers calculated?

Lottery

We are out of the playoffs. Here are the big games and what ifs for draft seeds.
Although it might be more fun to go down swinging.

Big Games

Saturday100.0*Lottery seed
Athletics 20 Dodgers 11 -0.2
Giants 18 Wiz 1 +0.1
If winner is:HomeAway
Sunday100.0*Lottery seed
Dodgers vs Athletics+0.4-0.2
Wiz vs Nationals-0.3+0.1

What If

100100100100100100100100100100100100100100
If finish:Chance will finish season at seed
TWW-L1234567891011121314
201-09010
190-14753
Total:5644
Games Above .500
Chance Will Make Playoffs