Hartman, who was chosen No. 30 by the Blackhawks, has 10 goals and a team-leading 21 points in 20 games with the Plymouth Whalers in the Ontario Hockey League this season.
Last season he had 23 goals and 60 points in 56 games with Plymouth and had three points in seven games to help the United States win the gold medal at the 2013 IIHF World Junior Championship in Ufa, Russia.
It was kind of touching. I didn't know really what to expect. I'm very appreciative and thankful for the people that supported me in my time here ... as I said, we'll move back to the area at some point in our life.
— Toronto coach Randy Carlyle on the video tribute and ovation he received in his first game back in Anaheim, a 3-1 win for the Maple Leafs