How are these numbers calculated?

Big Games

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

Week of 10/15100.0*Average seed
Rayo OKC 3 Ottawa 1 +0.5
Jacksonville 3 Miami 2 +0.2
Tampa Bay 2 Indy 3 -0.1
Minnesota 3 Edmonton 1 -0.1
Indy 3 Carolina 0 -0.0
Week of 10/22100.0*Average seed
Ft. Lauderdale 0 Rayo OKC 2 +0.5
Miami 1 Edmonton 0 -0.2
Edmonton 1 Jacksonville 0 -0.2
Cosmos 4 Miami 0 +0.1
Indy 3 Puerto Rico 0 -0.1
Carolina 1 Minnesota 0 +0.1
Week of 10/29100.0*Average seed
Rayo OKC 2 Indy 1 +0.3
Points
Chance Will Win Championship