How are these numbers calculated?

Big Games

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

Week of 4/1100.0*Chance wins title100.0*Average seed
IWG 3 Road Runner 1 +14.6
+0.1
SWE 1 Raintree 7 +7.8
+0.1
Week of 4/8100.0*Chance wins title100.0*Average seed
Road Runner 0 Raintree 2 Yes
+0.4
Week of 4/15None
Points
Chance Will Win Championship