1940: Pitcher “Silent” John Whitehead of the St. Louis Browns throws a no-hitter in a six-inning game against the Detroit Tigers. That would be his only win in 1940, and Whitehead would only start seven other games in his two seasons with the Browns, posting ERAs of 5.86 and 5.40 in 1939 and 1940. In that fateful 1940 season, Whitehead would allow 46 hits in 40 innings pitched while only striking out eleven batters. In fact, Whitehead only contributed .2 wins above replacement in 1940 — a surprisingly-low amount for a pitcher who tossed a no-hitter in the same season.
1999: First baseman Mark McGwire hits his 500th career homer, becoming the fastest in the history of baseball to accomplish the feat at the time, at age 35. McGwire is also the only player to ever reach 500 homers just a year after hitting his 400th, and would hit a total of 583 bombs in his 16-year career. McGwire would hit 65 homers (most in MLB), drive in 147 RBIs (most in NL), and finish 5th in NL MVP voting in 1999. The first baseman would also finish fifth in runs scored, fourth in offensive wins above replacement, sixth in OBP, second in slugging percentage, third in total bases and second in walks in ’99. McGwire would hit a staggering 220 homers in just 545 games over his five seasons with the Cardinals, while making the All-Star team in four of the five seasons. The current Cardinal hitting coach, McGwire has been mired in a PED scandal since the emergence of the Mitchell Report that implicated him in using steroids throughout his career, which is the likely reason why the player with the 10th-most career homers and eighth-highest career slugging percentage has not been elected to the Baseball Hall of Fame in his six years of eligibility.