Kadri launched himself at a fallen Wingels, who had his back turned to Kadri.
The officials gave Kadri a major for charging and a game misconduct.
“He was turning up the wall, so I was going for the hit and he ended up falling,” Kadri said after the game. “I mean it happened pretty quick.”
Game 2 of the series, which Boston leads 1-0 after Thursday’s 5-1 win, will be played on Saturday.