Track wins, loses, win average and Standings

I have a master schedule and would like to enter results of each game with a win column and loss column and on a separate sheet have the standings calculated, sorted and displayed based on win average (wins/games played)

Tie breaker in standings would be who won in games against each other, and if needed could be figured by hand. Every attempt I've made changes values all over.

I am failing. I've attached the bare bones schedule sheet with some results and scores in text-only fields. Thank you anyone who can help.