The Flames acquired McGrattan a day earlier from the Nashville Predators in exchange for Joe Piskula. McGrattan has played two games with the Predators and six games with the Milwaukee Admirals (American Hockey League) this season.
This will be McGrattan's second time suiting up for the Flames after playing for Calgary during the 2009-10 season when he had one goal and three assists along with 86 penalty minutes in 34 games and was a plus-3.
Aliu played two games for the Flames on his call-up and registered 10 penalty minutes.
I remember the first time at Wrigley Field all of us had the long johns, the turtlenecks and the extra equipment because we were afraid of being cold. Halfway through the first period everybody's ripping everything off and we just ended up wearing what we would normally wear for a game at the United Center.
— Chicago Blackhawks forward Patrick Sharp on the 2009 Bridgestone NHL Winter Classic