<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (June 2016) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (June 2016) (Learn how and when to remove this template message) </Td> </Tr> <Table> Saskatchewan Roughriders <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Founded </Th> <Td> 1910 </Td> </Tr> <Tr> <Th> Based in </Th> <Td> Regina, Saskatchewan, Canada </Td> </Tr> <Tr> <Th> Home field </Th> <Td> Mosaic Stadium </Td> </Tr> <Tr> <Th> Head coach </Th> <Td> Chris Jones </Td> </Tr> <Tr> <Th> General manager </Th> <Td> Chris Jones </Td> </Tr> <Tr> <Th> Owner (s) </Th> <Td> Saskatchewan Roughrider Football Club Inc . </Td> </Tr> <Tr> <Th> League </Th> <Td> Canadian Football League </Td> </Tr> <Tr> <Th> Division </Th> <Td> West Division </Td> </Tr> <Tr> <Th> Colours </Th> <Td> Green, white </Td> </Tr> <Tr> <Th> Nickname (s) </Th> <Td> Riders, the Green and White, the Roughies </Td> </Tr> <Tr> <Th> Mascot (s) </Th> <Td> Gainer the Gopher </Td> </Tr> <Tr> <Th> Grey Cup wins </Th> <Td> 4 (1966, 1989, 2007, 2013) </Td> </Tr> <Tr> <Th> Website </Th> <Td> www.riderville.com </Td> </Tr> <Tr> <Th_colspan="2"> Current uniform </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> 2017 Saskatchewan Roughriders season </Td> </Tr> </Table> <Tr> <Th> Founded </Th> <Td> 1910 </Td> </Tr>

When did the riders win the grey cup