On Opening Day, before 8,376 fans at Huntington Avenue Baseball Grounds, the Americans defeat the A's in the morning game of a Patriot's Day twin bill, 9–4. In front of 27,658 spectators, Connie Mack's Athletics win the matinee match-up, 10–7, which features two future Hall of Fame hurlers, Eddie Plank and Cy Young.
For the first time in club history, the A's wear numbers on their uniforms. Connie Mack, the owner and manager of the team, believed the sale of scorecards would suffer because players could be identified by their jerseys.
With a 4-2 win over the Reds, the Braves record their 12th consecutive victory to establish a major-league record for the most victories from the beginning of the season. The previous mark had been set a year earlier by the Oakland A's.
Matt Panetta's timely hitting and outstanding defensive play help Katz defeat MIC, 6-2, in South Meriden Little League action. The 11 year-old is awarded the game ball as a result of his efforts.
After retiring 26 consecutive A's players, Mariners right-hander Brian Holman gives up a homer to pinch-hitter Ken Phelps, turning his perfect game into the ninth one-hitter in franchise history after he strikes out Rickey Henderson for the final out. Ironically, the round-tripper will be the final one 'Digger' hits in his 11-year major league career.
Mark McGwire becomes the fourth major leaguer to hit a home run over the left field roof at Tiger Stadium. The A's first baseman joins Harmon Killebrew (1962), Frank Howard (1968), and Cecil Fielder (1990) as the only players to accomplish the feat.