Every general starts with 200 rating points, and your rating point total can never go below zero.
At the beginning of every game you compare the rating point difference between the two generals on the following chart:
The first number in the Points column is the points that the winner gets and the loser loses if the higher rated general wins. The second number is the points that the winner gets and losers loses if the lower rated general wins the match.
In case of a tie, the higher ranked general loses half they points they
would lose as if they had lost. The lower ranked general gains half the
points they would have gained for a win. If both generals are exactly the
same then both generals gain half what they would have gained for a win.
Stewart plays Nevil. Stewart has racked up 274 rating points after 5 victories, while Nevil has lost 5 straight games and now has rating points of 124. The difference between the two generals is 150. On the chart this indexes to 9/23.
This means that if Stewart wins:
Stewart's rating points = 274+9=283
Nevil's rating points = 124-9 = 115
Should Nevil pull off the upset win:
Stewart's rating points = 274-23 = 251
Nevil's rating points = 124+23 = 147
Should the coaches tie:
Stewart's rating points = 274-5 = 269
Nevil's rating points = 124+12 = 136