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
Tigers 266 Indians 318 -14.7
-0.6
White Sox 205 Nationals 268 -1.4
-0.0
Blue Jays 229 Pirates 264 +0.8
+0.1
Americans 285 Red Sox 343 -0.5
Phillies 200 Rays 212 +0.3
If winner is:HomeHome OTHome SOAway SOAway OTAway
Week of 6/24100.0*Chance in playoffs100.0*Average seed
Americans vs Tigers-14.5-13.3-13.4+10.4+10.4+11.4
-0.7-0.6-0.6+0.5+0.5+0.5
Nationals vs Pirates-3.8-3.4-3.6+1.2+1.2+1.6
-0.1-0.1-0.1+0.0+0.0+0.0
White Sox vs Blue Jays+3.8+3.6+3.7-1.2-1.3-1.4
+0.2+0.2+0.2-0.1-0.1-0.1
Red Sox vs Indians-1.3-1.0-1.0+3.0+3.1+3.3
-0.0-0.0-0.0+0.1+0.1+0.1
Rays vs Twins-0.6-0.4-0.4+0.9+0.8+0.9
-0.0-0.0-0.0+0.1+0.1+0.1
Phillies vs Brewers-0.4-0.3-0.3+0.6+0.6+0.7
-0.0-0.0-0.0+0.1+0.1+0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
169-0In694148,765
158-1100.0%1981001,004,686
147-299.508785103,067,559
136-387.105392512005,359,741
125-438.7152224713105,915,116
114-54.1103324319204,270,652
103-60.10004264623102,009,051
92-7Out03285711100593,957
81-8Out0345391210100,256
70-9Out07273922412,009
Total:50.4%034413221494100022,481,792
Games Above .500
Chance Will Make Playoffs