How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Saturday, 1/4100.0*Chance in playoffs100.0*Average seed
Gary W 1 Michael C 0 +21.3
+0.7
Chris Be 1 Gary W 2 +21.3
+0.7
Chris Be 0 Michael C 0 +3.9
Gary W 1 Chris Bo 1 -3.9
-0.0
Chris Bo 0 Chris Be 1 -1.3
Chris Bo 0 Michael C 1 -1.3
Points
Chance Will Make Playoffs

Lottery

Why are you looking down here? We just made the playoffs!

Big Games

Saturday, 1/4100.0*Lottery seed
Gary W 1 Michael C 0 -2.6
Chris Be 1 Gary W 2 -2.6
Gary W 1 Chris Bo 1 +0.4
Nick P 1 Paul G 1 -0.1
Chris Be 0 Michael C 0 -0.1
Guy T 1 Ryan W 1 -0.1
Amy B 1 Guy T 1 -0.1
Dave K 1 Nick P 1 -0.1
Dave G 1 Nick P 3 +0.0
Mark K 1 Paul G 0 +0.0
Chris Bo 0 Chris Be 1 +0.0
Chris Bo 0 Michael C 1 +0.0
Jamie H 1 Amy B 0 +0.0
Nick P 1 Mark K 0 +0.0
Guy T 1 Jamie H 0 +0.0
Jamie H 0 Ryan W 4 +0.0
Amy B 2 Ryan W 1 +0.0