Complex sentence: However, Hawkins prevailed in the decider to win the match 13--12, the first time in 14 years that Hawkins had beaten O'Sullivan in a competitive match, and only the second time in 13 years that O'Sullivan had failed to reach the World Championship quarterfinals.
Split into simpler sentences: However, Hawkins prevailed in the decider to win the match 13--12. This was the first time in 14 years that Hawkins had beaten O'Sullivan in a competitive match, and only the second time in 13 years that O'Sullivan had failed to reach the World Championship quarterfinals.