<Tr> <Th> 2017 </Th> <Td> Leeds </Td> <Td> 24--6 </Td> <Td> Castleford </Td> <Td> 72,827 </Td> </Tr> <Tr> <Th> 2018 </Th> <Td> Wigan </Td> <Td> 12--4 </Td> <Td> Warrington </Td> <Td> 64,892 </Td> </Tr> <Table> Grand Final winners and runners up <Tr> <Th> Club </Th> <Th> Winners </Th> <Th> Runners - up </Th> <Th> Years won </Th> <Th> Years runner - up </Th> </Tr> <Tr> <Th> Leeds Rhinos </Th> <Td> 8 </Td> <Td> </Td> <Td> 2004, 2007, 2008, 2009, 2011, 2012, 2015, 2017 </Td> <Td> 1998, 2005 </Td> </Tr> <Tr> <Th> St Helens </Th> <Td> 5 </Td> <Td> 5 </Td> <Td> 1999, 2000, 2002, 2006, 2014 </Td> <Td> 2007, 2008, 2009, 2010, 2011 </Td> </Tr> <Tr> <Th> Wigan Warriors </Th> <Td> 5 </Td> <Td> 5 </Td> <Td> 1998, 2010, 2013, 2016, 2018 </Td> <Td> 2000, 2001, 2003, 2014, 2015 </Td> </Tr> <Tr> <Th> Bradford Bulls </Th> <Td> </Td> <Td> </Td> <Td> 2001, 2003, 2005 </Td> <Td> 1999, 2002, 2004 </Td> </Tr> <Tr> <Th> Warrington Wolves </Th> <Td> 0 </Td> <Td> </Td> <Td> </Td> <Td> 2012, 2013, 2016, 2018 </Td> </Tr> <Tr> <Th> Hull F.C. </Th> <Td> 0 </Td> <Td> </Td> <Td> </Td> <Td> 2006 </Td> </Tr> <Tr> <Th> Castleford </Th> <Td> 0 </Td> <Td> </Td> <Td> </Td> <Td> 2017 </Td> </Tr> </Table> <Tr> <Th> Club </Th> <Th> Winners </Th> <Th> Runners - up </Th> <Th> Years won </Th> <Th> Years runner - up </Th> </Tr>

Who has won the most grand finals in rugby league