The Capitals (36-21-7) are in first place in the Metropolitan Division, one point ahead of the second-place Philadelphia Flyers and three ahead of the third-place Pittsburgh Penguins.
The Maple Leafs (39-20-7) are in second place in the Atlantic Division, four points behind the Tampa Bay Lightning and one ahead of the third-place Boston Bruins.
Washington and Toronto are familiar with each other from playing in the Eastern Conference First Round last season. The Capitals won the best-of-7 series in six games, with each game decided by one goal and five decided in overtime.
"Two good teams are going to go nose-to-nose," Trotz said. "Honestly, I haven't thought a whole lot about it until now because we've had a grinding stretch here -- the number of games, opponents, all that. So, I'm looking forward to it now."
It will be the third outdoor game for each team. The Capitals defeated the Pittsburgh Penguins 3-1 in the 2011 Bridgestone NHL Winter Classic at Heinz Field in Pittsburgh and defeated the Chicago Blackhawks 3-2 in the 2015 Bridgestone NHL Winter Classic at Nationals Park in Washington.