Best Mario brand of competitive game play since Mario Kart 64! My vote for most under rated Wii Title.
It is a simple layout and you know what you are getting when you buy any of the Mario sport franchises, but this one has SERIOUS MEAT in the game play and can almost never be perfected.
My only grip is with the Supershot (or whatever it is called) in online play. Depending on the connection it can lag and be near impossible time correctly allowing your competition to easily score up to 5 goals undeserved.
Great for Kids and even better for competitive adults. My vote for most under rated Wii title.