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
Ft. Lauderdale 2 Puerto Rico 0 +1.3
Tampa Bay 2 Indy 3 +0.2
Minnesota 3 Edmonton 1 -0.2
Jacksonville 2 Cosmos 4 +0.1
Indy 3 Carolina 0 +0.1
Jacksonville 3 Miami 2 -0.1
Rayo OKC 3 Ottawa 1 +0.0
Week of 10/22100.0*Average seed
Ft. Lauderdale 0 Rayo OKC 2 -1.1
Edmonton 1 Jacksonville 0 +0.2
Indy 3 Puerto Rico 0 +0.2
Tampa Bay 1 Ottawa 1 +0.1
Carolina 1 Minnesota 0 -0.1
Week of 10/29100.0*Average seed
Ottawa 0 Ft. Lauderdale 1 +1.5
Jacksonville 3 Tampa Bay 2 +0.4
Minnesota 0 Cosmos 1 +0.2
Puerto Rico 2 Carolina 1 -0.1
Points
Chance Will Win Championship