How are these numbers calculated?

Big Games

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

Friday100.0*Average seed
GRN 3 CIN 2 (ot)+0.3
NOR 3 REA 4 (ot)-0.1
SC 3 ATL 2 -0.0
BRM 1 MAN 4 +0.0
Saturday100.0*Average seed
ATL 6 GRN 2 -0.8
NOR 2 REA 4 -0.2
BRM 5 MAN 4 -0.1
Points
Chance Will Make Playoffs