How are these numbers calculated?

Big Games

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

Week of 5/20100.0*Chance in playoffs100.0*Average seed
Crossover 115 Sea Dawgs 103 -29.0
-0.3
Crossover 177 Gladiators 128 Out
-0.1
Sea Dawgs 85 Express 88 -0.5
Week of 6/1100.0*Chance in playoffs100.0*Average seed
Invasion 118 Express 102 +0.1
Week of 6/9None
Games Above .500
Chance Will Make Playoffs