- 1950 - Considered a well-guarded secret, Mel Parnell reveals he pitched all but three of his 39 games with a sore elbow last season. The 27-year 'Dusty' finished the season with a 25-7 record and a 2.77 ERA for the second-place Boston Red Sox .
- 1986 - Pedro Guerrero , the Dodgers most productive hitter, ruptures a tendon in his left knee while sliding into Third Base in an exhibition game. Guerrero will be sidelined for at least three months and not have his first hit until September.
- 1985 - A major league owners' proposal is agreed to by the Players Association . The American and National leagues playoff formats are changed to best-of-seven formats. The League Championship Series had been played as a best-of-five since its inception in 1969.
- 1991 :
- --- Nolan Ryan and his son, Reid, pitch against each other as the Rangers take on the University Of Texas At Austin . Reid, a 19-year-old freshman, gives up four runs in two innings, and is down 4–1 to his father when he leaves the game. Nolan gives up five hits, three runs, and Strikes Out seven in five innings, as the Rangers win 12–5.
- ---The Chicago White Sox sign injured Free Agent Outfielder Bo Jackson to a one-year contract worth $700,000. The Kansas City Royals had released Jackson on March 15, citing his inability to play baseball due to a football-related hip injury.
:: Vladimir Guerrero hits a pair of homers for the Montreal Expos but the Dodgers defeat Montreal, 10–4, behind Eric Karros ' Grand Slam .
:: Jason Giambi of the Oakland Athletics hits two home runs against the Detroit Tigers . Despite Giambi's effort, Detroit edge the Athletics 7–4.
- 1856 - Guy Hecker , pitcher (d. 1938 )
- 1919 - Larry Shepard , manager
- 1926 - Alex Grammas , player and manager
- 1929 - Art Ditmar , pitcher
- 1930 - Wally Moon , All-Star outfielder
- 1939 - Hawk Taylor , catcher
- 1943 - Barry Moore , pitcher
- 1946 - Rod Gaspar , outfielder
- 1956 - Darrell Jackson , pitcher
- 1958 - Gary Pettis , outfielder
- 1960 - Tim Conroy , pitcher
- 1961 - Tim Crews , pitcher (d. 1993 )
- 1962 - Dave Miley , manager
- 1963 - Chris Bosio , pitcher
- 1967 - Miguel García , pitcher
- 1967 - Danilo León , pitcher
- 1968 - Mike Lansing , infielder
- 1971 - Quilvio Veras , infielder
- 1978 - Bobby Hill , infielder
- 1981 - Ryan Doumit , catcher
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