Complex sentence: When the match was close to its end, with Tigre winning by 2-1 and dooming Nueva Chicago to relegation, home supporters rioted, causing extensive damage to the Estadio Nueva Chicago.
Split into simpler sentences: When the match was close to its end, Tigre was winning by 2-1 and dooming Nueva Chicago to relegation. Suddenly, home supporters rioted, causing extensive damage to the Estadio Nueva Chicago.