Easily the best tennis game and one of my favorite Mario games
Graphics: 8 The character models are perfect but the backgrounds and audience are dull and boring. The cutscenes and intro movie are one of the best I have seen (except that all characters look like they have 1 yellow eye and 1 normal eye)
Sound: 6 The sound effects are some of my favorites and the soundtrack isn't too bad (forgettable though). I like the Super Mario Sunshine and Luigi Mansion stages.
Controls: 8 The game mostly consists of pressing A but serving balls is cool and easy, the only major gripe I have against the controls is that the super moves can be unresponsive sometimes.
Entertainment: 7 The game is fun in tournaments and against friends but the CPU is too easy to beat. Luckily the minigames are extremely fun and are a major part of this title.
Overall: 7.3 Easily the best tennis game and it is pretty cool to see the super moves and the characters.