Sega Sports 1 is a Sega Mega Drive compilation containing three previously released Mega Drive sports games. It is similar to other Mega Drive compilations - Mega Games 1, Mega Games 2, Mega Games 3, Sonic Classics etc. Sega Sports 1 was only released in Europe in 1995.
Like some other compilations by Sega (Master Games 1, Sega Ages: Volume 1), there was never a "Sega Sports 2".