How are these numbers calculated?

Big Games

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

Week of 6/24100.0*Average seed
Hans Island 1 Halifax Wandere 3 -0.2
Windsor Rum Run 0 Breithaupt Park 0 -0.1
Binbrook Buccan 4 Farmers FC 2 -0.1
Week of 7/1100.0*Average seed
EXPAT FC 3 Hans Island 2 -0.3
Borussia Moncto 5 Hans Island 3 -0.3
Scarborough FC 2 Racing Club de 0 +0.1
Racing Club de 0 Beaverton FC 1 +0.1
Breithaupt Park 1 Farmers FC 3 +0.0
Week of 7/8100.0*Average seed
Winnipeg Wander 2 Hans Island 3 +1.4
D.R. Legion FC 3 Racing Club de 1 +0.2
Porcupine Gold 2 Racing Club de 0 +0.0
Points
Chance Will Make Playoffs