The 25-year-old Abdelkader had eight goals and 14 assists in 81 games last season for Detroit. He's played 209 games for the Red Wings over the last five seasons.
The 29-year-old Colaiacovo was a free agent after appearing in 370 games in nine NHL seasons for the Toronto Maple Leafs and St. Louis Blues. He had two goals and 17 assists in 64 games for the Blues in 2011-12.
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