» July 19, 1963:
Tommy Harper drives in all the runs in the Reds 5–2 win over the Giants. Harper has two home runs and a single for Cincinnati.
» August 24, 1965: In Milwaukee, Tommy Harper cracks a two-run homer with two outs in the 9th inning as the Reds beat the Braves, 3–2. Billy O'Dell is the pitcher serving up Harper's homer.
» August 8, 1966: The Reds beat the Giants, 10–6, and Cincy OF Tommy Harper stretches his consecutive hits streak to 24 games.
» November 21, 1967: Cleveland acquires OF Tommy Harper from the Reds for 1B Fred Whitfield and P George Culver.
» October 15, 1968: Roger Nelson is the initial choice of the Royals in the American League expansion draft. Don Mincher is the Pilots' first choice. Other Seattle selections include Tommy Harper, Tommy Davis, Gary Bell, and Lou Piniella. Kansas City chooses Wally Bunker, Moe Drabowsky, Hoyt Wilhelm, and Joe Foy.
» July 27, 1969: Seattle suffers another heartbreaker, losing 5–3 to Boston in 20 innings at Sicks Stadium. Joe Lahoud hits a 2-run home run in the top of the 20th for Boston, and Tommy Harper matches in the bottom of the inning for the losers. Jim Lonborg is the winner.
» July 17, 1970: With the score tied at 5–5 and bases loaded in the 10th inning, and no outs, Brewers manager Dave Bristol inaugurates the "Bristol Shift," bringing OF Tommy Harper in between SS and 3B. Unperturbed, George Scott hits a sac fly to win the game.
» September 22, 1970: Tommy Harper hits his 30th home run to lead the Brewers to a 4–2 win over the Angels. Harper has 33 stolen bases and becomes the 5th major leaguer to go 30-30 in the same season. It is Milwaukee's 60th win of the year.
» October 11, 1971:
The Red Sox and the Brewers engineer a 10-player trade that sees P Jim Lonborg, P Ken Brett, OF Joe Lahoud, OF Billy Conigliaro and 1B George Scott go to Milwaukee, and P Marty Pattin, P Lew Krausse and OF Tommy Harper head to Boston.
» September 7, 1972: Tommy Harper and Rico Petrocelli club 3-run homers to poser the Red Sox to a 10–4 win over the Yankees and move into first place in the American League East ahead of the Tigers. Siebert adds a homer as he wins his 12th game.
» December 2, 1974: The Red Sox trade OF Tommy Harper to the Angels for IF Bob Heise.
» August 13, 1975: The A's release P Jim Perry and purchase OF Tommy Harper from the Angels.