There is no singles in tennis, but I think it would be a great addition (if possible). Anything that adds more to good gameplay I'm for. I think Nintendo will stay away from this because in singles tennis, you can't hit the tennis ball past the 2 lines on the left/right in singles tennis (tennis fans - you know what I'm saying). This could make the game harder - and Nintendo want's their games to be fun for all ages. Those are my words.