The Huskies tied the game on another Petan power-play goal at 10:38. The high shot handcuffed goalie Stephon Willams and fluttered in behind him.
But McInnis bailed out his goalie, exactly three minutes later, with a low rocket shot from just inside the blue line that rang the far post and went in.
“(Copley) gave me some room, and if I get the chance to shoot, I’m going to shoot,” McInnis said.
A week ago, McInnis was benched for a good portion of a game for a bad play Minnesota Duluth, but he had his mojo back on Friday in his home rink.
“Johnny was very good tonight,” Hastings said. “He had energy in our pregame skate, he had energy in the locker room and energy on the ice. And he was rewarded for that.”
Getting an assist from McInnis, the Mavericks’ leading scorer, Matt Leitner, showed some patience and some niftiness with the puck to make it 4-2 at 3:31 of the third period.
Collecting the rebound of a Chase Grant shot, Leitner dangled the puck until Copley committed and then tucked the puck in behind the goalie. McInnis also assisted on the goal for a two-point game.
Minnesota State outshot Michigan Tech 36-22, including a 16-7 advantage in the third period. Williams stopped 20 shots for his 16th win of the season. Copley, who is also a freshman, made 32 saves.
The Mavericks (19-9-3, 13-9-1 in WCHA) and the Huskies will conclude the series at 7:07 p.m. tonight.
Michigan Tech 1-1-0—2
Minnesota State 1-2-1—4
Scoring: 1. MTU-Petan 12 (Khaira 15, Furne 11) ppg 4:35; 2. MSU-Margonari 7 (Nelson 5, Blueger 13) ppg 13:41
Penalties: Gaede, MSU, major (boarding) 1:55; C.Pietila, MTU (holding) 12:51
Scoring: 3. MSU-Hayes 17 (unassisted) 1:07; 4. MTU-Petan 13 (Johnstone 16, Seigo 7) ppg 10:38; 5. MSU-McInnis 12 (Palmquist 15, Gervais 4) 13:38
Penalties: Grant, MSU (holding) 8:05; Buchanan, MSU (tripping) 9:00; Petan, MTU (tripping) 14:37; Hyland, MTU (cross-checking) 19:05; Stebner, MTU (interference) 19:58