How are these numbers calculated?

Big Games

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

If winner is:HomeDrawAway
Week of 10/6100.0*Chance wins title100.0*Average seed
Whitecaps vs TimbersNoNo+19.9
-0.2+0.3+1.0
Sounders vs WhitecapsNo+2.5+2.5

What If

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

100100100
If finish:ChanceChance will finish season at seed
TPW-D-Lwins title123Count
92-0-038.9%39611,796,815,837
71-1-0No84166,876,212,694
61-0-1No39716,299,506,908
3-5No10017,873,830,461*
Total:1.6%2178142,846,365,900

* Row combines multiple less frequent records.

Points
Chance Will Win Championship