How are these numbers calculated?

Big Games

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

Saturday100.0*Average seed
Rome 10 Columbia 0 +0.1
Sunday100.0*Average seed
Hagerstown 4 Lexington 3 -0.2
Rome 16 Columbia 4 +0.1
Monday100.0*Average seed
Hagerstown 11 Lexington 6 -0.3
Rome 4 Columbia 2 +0.1
Games Above .500
Chance Will Make Playoffs