New Rule - Both Players Bring New Balls to Match. For more details, read below:

Both players should bring a new can of balls to the match.  One of those cans is opened for the match.  After the match is over, the winner takes the unopen can of balls, and the loser takes the used balls.  The rules have been updated to reflect this.  It's rule #13.

Thank you David Marioni for this idea.