How are these numbers calculated?

Big Games

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

Week of 4/10100.0*Chance in playoffs100.0*Average seed
Tigers 310 Phillies 195 +14.4
+1.0
Pirates 247 Rays 191 -1.4
Blue Jays 271 Brewers 305 +1.0
+0.1
White Sox 200 Americans 164 +0.6
Nationals 169 Twins 250 -0.1
-0.0
Red Sox 361 Indians 260 +0.0
Week of 4/17100.0*Chance in playoffs100.0*Average seed
Twins 232 Pirates 218 -0.6
+0.2
Rays 194 Red Sox 226 +0.6
-0.1
Brewers 298 White Sox 277 +0.6
+0.1
Americans 217 Tigers 230 +0.5
+0.1
Phillies 225 Blue Jays 294 -0.5
-0.1
Week of 4/24100.0*Chance in playoffs100.0*Average seed
Blue Jays 251 Tigers 123 -3.1
-1.5
Brewers 257 Americans 351 -1.1
-0.4
Red Sox 236 Pirates 187 +0.6
-0.0
Indians 266 Twins 250 +0.4
-0.3
Games Above .500
Chance Will Make Playoffs