April 7 - A broken wrist that refuses to heal compels Louisville first baseman Pete Cassidy to be the first MLB player to try a newfangled medical breakthrough called the "x-ray".
Shortstop Herman Long hits for the cycle to give the Boston Beaneaters a 17–5 victory over the Louisville Colonels.
The Washington Senators defeat the Pittsburgh Pirates, 14–9, in a beanball battle. Senators pitcher Win Mercer hits three Pittsburgh batters while Pirate Pink Hawley plunks three Washington batters in a disastrous 11-run seventh inning, tying a mark he set on July 4, 1894. Hawley retires in 1900 after nine seasons of play with a still-standing National League record of 195 hit batters. All told, eight batters are plunked in the contest, a National League-record five by Hawley. The five Washington batters hit by pitches ties the NL mark and won't be matched until July 2, 1969.
Hughie Jennings of the Baltimore Orioles knocks down Cincinnati Reds third baseman Charlie Irwin before he can catch Bid McPhee's throw. Jennings scores afterward to give the Orioles a controversial 6–5, 10-inning win over Cincinnati. Umpire Bob Emslie is escorted out of the ballpark by Cincinnati police.
May 30 – Washington Senators third baseman Bill Joyce hits for the cycle in an 8–1 victory over the Pittsburgh Pirates.
July 13 – Philadelphia Phillies left fielder Ed Delahanty becomes the second Major Leaguer to hit four home runs in a game, two of them being inside-the-park home runs. It wasn't enough, as the Phillies lose to the Chicago Colts, 9–8. He is the only member of the "four home runs in a game" club to have an inside-the-park home run as part of his feat, and he is the first player to do so in a losing effort.