What do the numbers at the "Total number of your started games" line mean?

If you do not participate in BrainKing tournaments, you can see only the total number of your started games there. Otherwise more numbers (e.g. 13 + 7) can appear and it means that you are currently playing 13 games and 7 games of yours are waiting at the Tournaments section to be started by the particular tournament creator. This method ensures that nobody can exceed his/her started games limit significantly.