Complex sentence: O'Sullivan became the first players to win his quarter-final and semi-final match with a session to spare since 2004, when he also achieved this feat by defeating Anthony Hamilton 13--3 and Stephen Hendry 17--4.
Split into simpler sentences: O'Sullivan became the first player in ten years to win both his quarter-final and semi-final match with a session to spare. In 2004, O'Sullivan achieved this feat by defeating Anthony Hamilton 13--3 and Stephen Hendry 17--4.