Games where the winner is determined after multiple plays

There are some games where a winner is only determined after a series of plays.

Example 1: Memoir '44 suggests you play as one team and then the other, and determine who won by whom got the most medals collectively across both plays.

Example 2: Kamisado has the option to play a series of 3 or more games and determine the winner by either players collective score across all plays.

If I log each play individually the scores and champion stats will be thrown right off (as no won technically wins until the end) . If I log all plays as just one play the score I get is very little compared to the time and number of plays we have put in.

What feature can you provide to account for these types of games?