How are these numbers calculated?

Big Games

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

Tuesday100.0*Average seed
HCD 4 SCB 2 -0.1
Friday100.0*Average seed
GSHC 4 LHC 1 +0.3
SCB 1 HCFG 0 +0.1
EVZ 5 SCLT 4 -0.1
Saturday100.0*Average seed
HCFG 1 GSHC 6 +0.3
ZSC 4 EVZ 1 +0.1
HCD 5 SCRJ 3 -0.1
Points
Chance Will Make Playoffs