On August 16, 1890, Pittsburgh Alleghenys pitcher Bill Phillips became the first pitcher in baseball history to give up two grand slams in a single inning. Tom Burns and Malachi Kittridge of the Chicago Colts both hit bases loaded jacks as Chicago won the game, 18-5.
On May 23, 1890, the New York Giants and the Pittsburgh Alleghenys steal a combined seventeen bases in a single game, setting a National League record that still stands today. New York won the contest, 17-10.
The overall Major League single game record for combined stolen bases was set on April 22, 1890 by Philadelphia and Syracuse in the American Association.
James Francis “Pud” Galvin of the Pittsburgh Alleghenys became the first pitcher to reach 300 victories on October 5, 1888 when Pittsburgh defeated the Washington Senators, 5-1. Pitching in an era when two-man pitching rotations were the norm, Galvin accumulated 6,003 innings pitched and 646 complete games over his career, numbers second only to those of Cy Young. He reached the 300-victory landmark at the age of 31, and would finish his career with a 365-310 record.
The Brooklyn Bridegrooms (Dodgers) and the Pittsburgh Alleghenys (Pirates) faced off on September 1, 1890 for the first-ever triple header in major league baseball. Playing at home at Washington Park, Brooklyn swept Pittsburgh: 10-9, 3-2, and 8-4.