"Mario Tennis (マリオテニス64, Mario Tenisu Rokujūyon, Mario Tennis 64) is a sports video game published Nintendo and developed by Camelot Software Planning for the Nintendo 64 video game console. The game was released in North America and Japan in the summer of 2000, and released in Europe later in November. It is the first tennis-oriented game starring Mario since Mario's Tennis, and the first game developed by Camelot on a Nintendo system.
The success of Mario Tennis led to a sequel, Mario Power Tennis in 2004."
Source: Wikipedia, "Mario_Tennis_(video_game)," available under the CC-BY-SA License.