2016: Golden State Warriors’ record 54-game home winning streak was finally snapped with a 106-103 loss to the Boston Celtics, their 1st and only regulation home loss during their historic 73-win season (lost to Minnesota 4 days later at home in OT)
2013: Washington Nationals OF Bryce Harper became the youngest (20) player to hit multiple HRs on Opening Day, during his 1st career Opening Day after debuting in mid-2012 and winning the NL ROY
2008: In the final Opening Day at the old Yankee Stadium, the New York Yankees set a MLB record with their 11th consecutive Opening Day victory, 3-2 over the Toronto Blue Jays
1996: Just 7 pitches into the Cincinnati Reds-Montreal Expos Opening Day game, MLB umpire John McSherry suffered a heart attack, collapsing on the field and ultimately passing away. The players were shaken up so the game was postponed, prompting a gaffe of a statement by Reds owner Marge Schott, which would contribute to her eventual ousting
1973: Boston Celtics SF John Havlicek tied Wilt Chamberlain’s NBA playoff record by converting 24 FGM (for 54 points). Michael Jordan matched it during his 55-point game against Cleveland but it’s never been surpassed
1972: MLB players officially went on strike for the 1st time in the sport’s history which influenced future player strikes in baseball and other sports as well
1931: P Jackie Mitchell signed with the Chattanooga baseball club, becoming the very 1st woman to play professional baseball where she memorably struck out Babe Ruth & Lou Gehrig in an exhibition game