Complex sentence: The last men's basketball game to be played there was on February 28,1987, when Veterans Memorial Auditorium was not available so they had to play Southern Illinois in the conference tournament at the Fieldhouse.
Split into simpler sentences: The last men's basketball game to be played there was on February 28,1987. That was because Veterans Memorial Auditorium was not available so they had to play Southern Illinois in the conference tournament at the Fieldhouse.