Another SST mini-games trailer, this one shows some of the activities you get up to on the Monkey Ball court apart from just playing regular tennis matches.
From Wikipedia:
Sega Superstars Tennis is a tennis video game developed by Sumo Digital and published by Sega. The game was released on March 17, 2008 in Europe, on March 18, 2008 in North America, and on March 27, 2008 in Australia. Learn about Sega Superstars Tennis
