OTD: 45 years ago today, Bobby Orr announced his retirement from the NHL. Orr only played in 657 career regular-season games due to knee injuries; however, he finished his career with 270 goals, 645 assists, and 915 points. #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