William Henry Keeler, nicknamed "Wee Willie" because of his small stature, was an American right fielder in Major League Baseball who played from 1892 to 1910, primarily for the Baltimore Orioles and Brooklyn Superbas in the National League, and the New York Highlanders in the American League. Keeler, one of the best hitters of his time, was elected to the National Baseball Hall of Fame in 1939. One of the greatest contact hitters of all time and notoriously hard to strike out, Keeler has the highest career at bats-per-strikeout ratio in MLB history, averaging 63.17 at bats between each strikeout. His plate appearance-per-strikeout ratio is also one of the best of all time, with Keeler averaging 70.66 plate appearances between strikeouts, second only to Joe Sewell, another Hall of Famer, who averaged 73.06 plate appearances between each strikeout.

The Baltimore Orioles were a 19th-century professional baseball team that competed from 1882 to 1899, first in the American Association and later in the National League. This early Orioles franchise, which featured six players and a manager who were later inducted to the National Baseball Hall of Fame, finished in first place for three consecutive seasons (1894–1896) and won the Temple Cup national championship series in 1896 and 1897.