The 97th Grey Cup was played on November 29, 2009, at McMahon Stadium in Calgary, Alberta, and decided the Canadian Football League (CFL) champion for the 2009 season.

The week's festivities also included the ENMAX Street Festival and Stage on Stephen Avenue; the Calgary Herald Olympic Plaza Family Fan Fest; the Molson Canadian Quick Six Saloon at the Telus Convention Centre; the Scotiabank Grey Cup Gala Dinner and Contest at the Pengrowth Saddledome, featuring Great Big Sea; and the McMahon Stadium Pre-Game Party with live entertainment featuring Stereos (band).

Montreal kicker, Damon Duval made good on his second opportunity to kick the winning field goal to give the Alouettes their first Grey Cup in seven years with a come-from-behind 28–27 victory over the Saskatchewan Roughriders at Calgary's McMahon Stadium.

In the first quarter, Saskatchewan's quarterback, Darian Durant consistently moved the ball by mixing pass and run plays against Montreal's top ranked defence.

In the second quarter, Montreal looked to have gotten their offence back on track as Anthony Calvillo threw a pair of passes to slotback Ben Cahoon, which set up a 28-yard Damon Duval field goal to cut the lead to 10–3.

Due to the costly error, Saskatchewan would take advantage as Luca Congi was successful kicking a 44-yard field goal, which was followed by a Louie Sakoda single in the ensuing kickoff giving the Roughriders a 14–3 lead.

After a video review confirmed that Fantuz stayed in bounds to make the catch, Luca Congi kicked his third field goal to close the first half giving Saskatchewan a 17–3 lead.

The Montreal Alouettes capped that 9-play drive with a touchdown when Calvillo completed an 8-yard pass to wide receiver Jamel Richardson midway through the quarter to cut the lead to 17–10.

With less than eight minutes to play in the fourth quarter, and Montreal trailing 27–11, Anthony Calvillo threw from the Montreal-43-yard-line on a 2nd-and-10 attempt, and Brian Bratton caught the pass at the Saskatchewan 3-yard line.

On a play scrimmaging from the Saskatchewan 33-yard-line with under six minutes left in the game, Darian Durant attempted a pass for Andy Fantuz that was intercepted by Montreal's Jerald Brown.

With under two minutes remaining, on a play starting at the Saskatchewan 11-yard-line Calvillo stepped up in the pocket and threw to an uncovered Ben Cahoon for a touchdown, bringing Montreal to within a converted two-point attempt from tying the game.

The two-point attempt was missed when Donovan Alexander's pass interference on a Calvillo throw to Jamel Richardson was not called, and Saskatchewan maintained a 27–25 lead with just 1:45 remaining in the game.

The play was checked with video review and it was judged that there was not sufficient evidence to overturn the incomplete pass ruling, which set up a Montreal 2nd-and-10 attempt from the Saskatchewan 53-yard-line with 0:10 remaining in the game.

Still, after trailing 16–6 at halftime, Hamilton eventually tied the game at 16–16 on quarterback Kevin Glenn's 28-yard touchdown pass to Dave Stala, who made an amazing diving catch at 9:05 of the third quarter.

Lions would counter with Rolly Lambala's one-yard touchdown run at 12:14, a major set up by a 34-yard pass interference call on Hamilton's Jykine Bradley.

After the touchdown, the Tiger-Cats scored on a two-point conversion attempt to tie the game when Glenn again threw a pass to wide-open receiver Marquay McDaniel in the end zone to send it to overtime.

Emmanuel Arceneaux was the top Lion receiver on the day, pulling in six receptions for a total of 120 yards, while Paul McCallum was good on all four of his field goal attempts, the longest a 43-yarder.

In the opening half, the Stampeders again squandered three chances to score touchdowns from inside the red zone and settled for three Sandro DeAngelis field goals.

Three of those Stampeders drives in the second quarter ended with Calgary quarterback Henry Burris either shedding the ball under pressure or throwing an incompletion, which brought DeAngelis out onto the field.

the Stampeders gave them a chance after they were penalized for 35 yards, including two roughing the passer calls on Calgary's Charleston Hughes, which contributed to the Eskimos' second touchdown at 7:44 of the fourth quarter when quarterback Ricky Ray rushed in for the 1-yard score and trailed 24–21.

However, Edmonton's chances to get within field goal range to tie the game with four minutes remaining in the fourth quarter were stopped, after taking two costly holding penalties that kept them in their end of the field and were forced to punt the ball away, after Calgary's defensive tackle, DeVone Claybrooks sacked Ricky Ray for a 10-yard loss, which forced Edmonton to rely on their defence to get the ball back.

Date and time: Sunday, November 22, 1:00 PM Eastern Standard TimeVenue: Olympic Stadium, Montreal, Quebec The Montreal Alouettes had a dominant 15–3 season while the BC Lions was only 8–10, but the East final was widely seen as a toss-up due to the strong form of BC quarterback, Casey Printers after joining the Lions in September and because of the Alouettes previous struggles against their rival from Vancouver.

The game turned only seven minutes in the first quarter, after each team exchanged field goals, BC running back, Martell Mallett fumbled the ball on the Lions' 22 that was eventually recovered by Montreal's Shea Emry.

On the next play, Montreal quarterback, Anthony Calvillo found wide receiver, Jamel Richardson all alone in the end zone and threw his first touchdown pass of the game to give the Alouettes a 10–3 lead.

Early in the second quarter, BC defensive end, Lavar Glover missed his opportunity to tackle Kerry Watkins, which led to a 91-yard return that would set up a seven-yard TD toss by Calvillo to Richardson for a 24–3, Alouettes lead.

Montreal would then score their remaining touchdown on a John Bowman 41-yard interception return off BC backup quarterback, Travis Lulay, who replaced Printers late in the game.

However, the Saskatchewan Roughriders would respond at 7:54 in the second quarter, when quarterback, Darian Durant threw an 8-yard touchdown pass to Chris Getzlaf to make it 10–7, Calgary.

At the start of the third quarter, Saskatchewan would eventually break the tie breaker as Darian Durant would throw two touchdown passes to give the Roughriders a commanding lead over Calgary.