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.
You know what? We've played in some pretty special buildings along this playoff run so far. You start in Detroit, you go to Montreal, you come here … I think it's the first team to beat three Original Six teams to get to the Final if I'm not mistaken. That says how tough the road has been. Those are tough places to win.
— Lightning forward Steven Stamkos after Game 7 win vs. Rangers on Friday in New York