There are two basic game modes to play in, a single 'exhibition' style match or, big shocker, the Davis Cup itself. A single match is pretty simple; you choose a country and your opponent and have at each other. Playing through the Davis Cup is a little more involved since you are also managing a team of players. Each player has statistics that will go up as they compete in matches. There is also a multiplayer option including both single's and double's options. So you can have up to four people swinging wildly at the same time. The controls are also fairly straightforward. The digital pad moves you around while the A and B buttons are used to hit the ball, A hits, B lobs, and A+B does a power hit.
I hate to end on a bad note, but there is one aspect of the game that can prove to be problematic. While you can change the number of sets and games per match (for those tennis illiterate, the number of sets and games will determine how long a match is), this adjustment will only apply to exhibition matches. All Davis Cup tournament matches will have the standard number. For those who aren't aware that leaves a pretty lengthy match. Since this is on a portable system you should be able to pick it up and put it down as you need to. However, a Davis Cup match can take quite a long time and they should have a way to save during a match. As it stands, if you're playing against a decent opponent, a match can take up to, or over, an hour long.
Davis Cup Tennis is a nice little tennis game which focuses more on easy play than hyper-realistic tennis physics. The average joe blow can have a lot of fun with it, provided he can give a nice length of time per match.
