On this day in 1971, Bobby Orr became the first defenseman since 1922 to record a hat trick in the Stanley Cup Playoffs. Orr scored three goals in a 5-2 win over the Canadiens in Game 4 of the Quarterfinals. #nhl #nhlbruins #hockey #bostonbruins #nhlplayoffs #bruins #nhlhockey #nhlmemes #boston #nhlallstar #nhldiscussion #nhlnews #nhledits #nhldraft #bruinsnation #nhlawards #nhltrade #hockeylife #tdgarden #nhlhighlights #bostonsports #bruinshockey #bruinsfan #nhlblackhawks #nhlglobalseries #nhlfi #nhlleafs #nhltrades #nhltradedeadline #nhlcanadiens