Complex sentence: The Roosters-Dragons match has taken place since the 2002 season, and the Storm-Warriors since 2009 season both are now permanently fixtured to commemorate Anzac Day.
Split into simpler sentences: The Roosters-Dragons match has taken place since the 2002 season, and the Storm-Warriors since 2009 season. Both are now permanently fixtured to commemorate Anzac Day.