Complex sentence: On 10 October 2009, Leeds won the Super League Grand Final against St Helens at Old Trafford, 18--10 meaning that Leeds became the first club to be Super League champions three seasons running.
Split into simpler sentences: On 10 October 2009, Leeds won the Super League Grand Final against St Helens at Old Trafford, on an 18--10 scoreline. Leeds thus became the first club to be Super League champions three seasons running.