The 1888 World Series was an end-of-the-year professional baseball season championship playoff series between the National League champion New York Giants and the old American Association champion St. Louis Browns.

[1] Hall of Fame pitcher Tim Keefe went 4–0.

[2] This was the Browns' last appearance in a championship tournament and pre-modern-era World Series, the last of their four consecutive AA pennants.

The club would later join the NL in 1892 and be renamed as the St. Louis Cardinals by 1900.

(last World Series game to be played at a neutral site until 2020 World Series)