How are these numbers calculated?

Big Games

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

Week of 11/4100.0*Chance in playoffs100.0*Average seed
Eddie 63.96 Westport 57.96 +0.6
+0.3
Alex Wax 85.84 Helfman 83.58 -0.1
If winner is:HomeAway
Week of 11/11100.0*Chance in playoffs100.0*Average seed
Eddie vs Kochen+0.8Out
+0.4-0.4
Lew vs Alex Wax+0.1-0.1
+0.1-0.1
Bukantz vs Ray+0.1-0.1
-0.1+0.1
Westport vs Hayons+0.1-0.1

What If

Chances based on how well the Eddie finish out the regular season.   Explain

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
64-012.3%0211273220710604,502
53-10.0002123137172,409,971
42-2Out00223743,610,240
31-3Out2982,409,490
20-4Out100603,725
Total:0.8%001234919639,637,928
Games Above .500
Chance Will Make Playoffs