They have played in 19 Grey Cups, winning four of them.
4 times
1966: Saskatchewan 29 Ottawa 14
1989: Saskatchewan 43 Hamilton 40
2007: Saskatchewan 23 Winnipeg 19
2013: Saskatchewan 45 Hamilton 23
They have hosted the grey cup 3 times. In 1995, 2003 and 2013.
Nineteen: won 4 lost 15.
Saskatchewan
Saskatchewan has never played Calgary in the Grey Cup. Because of the crossover playoff rule, it is now possible to have a "West vs. West" Grey Cup but it has never happened. Perhaps you are thinking of the Ottawa Rough Riders, who Calgary defeated to earn their first Grey Cup in 1948.
1989
Saskatchewan's opponents in 1989 were the Hamilton Tiger-Cats.
The game in 2012 was the 100th Grey Cup game.
BC Lions have won the Grey Cup six times, most recently in 2011.
Montréal defeated Saskatchewan in the 97th Grey Cup in 2009, the year of the notorious "thirteenth man".
The Sarnia Imperials won their second Grey Cup in 1936, defeating Ottawa.
13 times
Eagle Keys