How are these numbers calculated?

Big Games

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

Week of 6/17100.0*Chance in playoffs100.0*Average seed
Americans 285 Red Sox 343 -9.4
-0.5
Tigers 266 Indians 318 +2.9
+0.1
Blue Jays 229 Pirates 264 +1.1
+0.0
White Sox 205 Nationals 268 -1.0
-0.0
Phillies 200 Rays 212 +0.2
If winner is:HomeHome OTHome SOAway SOAway OTAway
Week of 6/24100.0*Chance in playoffs100.0*Average seed
Americans vs Tigers+11.8+11.0+10.9-8.8-8.7-9.2
+0.7+0.7+0.7-0.5-0.5-0.6
White Sox vs Blue Jays+3.3+3.2+3.2-1.1-1.1-1.2
+0.2+0.1+0.1-0.1-0.1-0.1
Nationals vs Pirates-1.8-1.7-1.7+0.5+0.6+0.8
-0.0-0.0-0.1+0.0+0.0+0.0
Red Sox vs Indians-0.6-0.6-0.6+1.5+1.4+1.7
Rays vs Twins-0.4-0.2-0.3+0.5+0.5+0.6
-0.1-0.0-0.0+0.1+0.1+0.1
Phillies vs Brewers-0.3-0.3-0.3+0.4+0.6+0.5
-0.1-0.0-0.0+0.1+0.1+0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
159-0In39746,057
148-199.6%0943300443,356
137-289.006661710101,891,468
126-340.5231163919204,361,723
115-44.4202224822306,084,216
104-50.1002274723105,370,918
93-6Out043054111003,014,770
82-7Out04414013101,043,435
71-8Out072840214204,250
60-9Out0215424221,599
Total:18.7%0131515242215410022,481,792
Games Above .500
Chance Will Make Playoffs