Complex sentence: In 1973, Match Of the Day televised the mayhem that occurred after a match between Derby County and Chelsea, with the police struggling to keep the hooligan elements at bay, but violence erupted between the two team's hooligan firms.
Split into simpler sentences: In 1973, "Match Of the Day" televised the mayhem that occurred after a match with Derby County and Chelsea. The police struggled to keep the hooligan elements at bay, but violence erupted between the two team's hooligan firms.