» August 24, 1914: In the 2nd game of a twinbill at Washington, Detroit's Hooks Dauss and four Nats pitchers combine to plunk a record seven batters, a major-league record that will remain unmatched until 1971. Hooks hits three while Jim Shaw, Al Bentley, Harry Harper, and Jim Stevens hit four. The Tigers win 11–0 and take the opener as well, 3–1.
» August 12, 1916: At Fenway, Babe Ruth squares off against Washington lefty Harry Harper and both pitchers leave after seven innings, with Boston trailing 1–0. Ruth, with two strikeouts at the plate, is lifted for pinch hitter Hal Janvrin. Washington reliever Walter Johnson makes two errors in the 8th and gives up two runs in the 9th as Boston wins, 2–1.
» June 18, 1917: Hooks Dauss shuts out the Senators to give the Tigers a 1–0 win, their 3rd straight over Washington. Only one man advances as far as 2B. Nats pitcher Harry Harper gives up the run in the 4th after Ty Cobb walks, steals second (one of his three) aided by a passed ball, a wild pitch, and Sam Crawford's ground out.
» September 15, 1917: The Senators toss shutouts in both games today with the A's. Harry Harper wins the opener 5–0, and Walter Johnson follows with a 4–0 victory.
» December 29, 1919: The Red Sox send Braggo Roth and 2B Red Shannon to Washington for P Harry Harper, OF Mike Menoskey and 3B Eddie Foster.
» December 15, 1920:
The Yankees' Ed Barrow pries future Hall of Fame P Waite Hoyt, C Wally Schang, lefty Harry Harper, and IF Mike McNally from his former Boston team in exchange for 2B Del Pratt, C Muddy Ruel, P Hank Thormahlen, OF Sammy Vick, and cash.
» August 25, 1921: With Cleveland waltzing to a 15–1 win over the Yankees, NY hurler Harry Harper, pitching in the 8th, plunks OF Charles Jamieson in the ribs, Larry Gardner in the arm, and Steve O'Neill in the back. O'Neill throws the ball back at Harper precipitates a bench clearing brawl. New York OF Bob Meusel contributes four errors in the game. The Tribe takes over 1st place from the Yankees.
» October 11, 1921: Miller Huggins gambles in Game six with lefty Harry Harper (4-3), and the Yankees drive Fred Toney (18-11) to cover with three in the first. But the Giants come back with three in the 2nd, and continue the attack against Bob Shawkey while Jess Barnes slams the door, striking out 10, including seven in a row sandwiched around four walks. Emil "Irish" Meusel and Frank Snyder homer for the Giants in an 8–5 win. It is Barnes' 2nd World Series win in relief.
» July 3, 1951: Bill DiBenedetto of the Class D Hornell Dodgers walks 21 in a 5–1 loss to Corning. This record number of walks breaks the 36-year-old record of Harry Harper of the Minneapolis Millers.