After trading Shaw to the Montreal Canadiens on June 24, the Blackhawks needed a role-playing forward to provide versatility, grit and timely goals, all things Shaw did to help them win the Stanley Cup in 2013 and 2015.
Hartman, 22, has answered the call.
The rookie left wing, who spent most of the past two seasons with Rockford of the American Hockey League, had 31 points (19 goals, 12 assists) in 76 games and helped the Blackhawks finish with the most points (109) in the Western Conference.
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He played on all four lines, including a stint centering the second line, and contributed on the power play late in the season.
"I look at [Hartman's] year, and you've got to be real happy with his contribution," Blackhawks coach Joel Quenneville said. "He had a terrific year. If you'd have said he'd get 20 [goals], it would be a great number for him. He brings us a little bite as well."
If that sounds like Shaw, it's not a coincidence.
The Blackhawks selected Hartman (6-foot, 181 pounds) with the 30th pick of the 2013 NHL Draft with the hope he would develop into a slightly larger version of Shaw (5-11, 179). Based on his production, he's right on track.
Shaw scored 70 goals in 322 games during five seasons for the Blackhawks, with a high of 20 in 2013-14, and excelled in drawing penalties. Quenneville even learned to live with some of the undisciplined penalties Shaw took.
Hartman entered this season with a reputation for taking too many penalties, but improved his discipline. His 70 penalty minutes aren't much more than Shaw's average of 60 per season with the Blackhawks, and he also draws penalties.
"[He] has that edge to his game you appreciate, knowing he's in the tough areas, and he's willing to be scrappy at the net and in puck areas," Quenneville said. "When he's out there, you respect that. Your opponents are aware of him as well, but you're not out there with a free pass to take penalties."