Complex sentence: Watson was the coach of the St Kilda Football Club in 1999 and 2000, his success was limited, with the side winning only 12 of the 44 matches they played while he was in charge.
Split into simpler sentences: Watson was the coach of the St Kilda Football Club in 1999 and 2000. His success was limited, with the side winning only 12 of the 44 matches they played while he was in charge.