» July 2, 1922: A's OF Tilly Walker hits two home runs, giving him four in two days, as the A's lose to New York 9–3. He will finish with 37 for the year, two ahead of Babe Ruth. The Athletics, with the American League's winningest pitcher in Eddie Rommel (27-13) and losingest in Slim Harriss (9-20) will lead the AL with 114 home runs and climb out of the cellar.
» September 7, 1923: The A's are hit with a no-hitter for the 2nd time in four days as Boston's Howard Ehmke strikes out one while pitching a 4–0 no-hitter against them. "Ehmke's zippy crossfire came out of the shortstop's chest like bad news from a gatling gun" (Philadelphia Public Ledger). Preserving the no-hitter is rival pitcher Slim Harriss, who hits the ball to the wall in the 7th and winds up on 2B, but he is called out for failing to touch 1B. An 8th inning liner by Frank Welch is fumbled in LF and he reaches 1B. The liner is initially ruled a single but changed before the inning is over. Ehmke has now won six straight over the A's this season. For Ehmke's batterymate, Val Picinich, it is his 3rd no-hitter, each with a different team.
» May 20, 1925: George Sisler's 34-game hitting streak, stretching back to Opening Day, is stopped by the A's Lefty Grove and Slim Harriss. Browns teammate Ken Williams bangs a grand slam, but the A's win, 8–6.
» May 2, 1926: Walter Johnson wins his 400th career game, a 4–3 victory over the A's. Slim Harriss is the loser.
» May 23, 1926:
In Washington, Al Simmons hits a solo home run, off Walter Johnson, into the CF stands. The A's beat the Big Train, 5–3, behind the pitching of Slim Harriss.
» June 15, 1926:
After sending OF Bing Miller to St. Louis for OF Baby Doll Jacobson, the A's trade P Slim Harriss,
P Fred Heimach, and Jacobson to the Red Sox for OF Tom Jenkins and P Howard Ehmke, 32. Ehmke, 3-10 at Boston, will be 12-4 for the rest of the year at Philadelphia.
» June 30, 1927:
A crowd of 3,000 at Yankee Stadium see the Yanks hand the Red Sox their 12th straight loss, beating the visitors, 13–6 on 19 safeties. Lou Gehrig takes over the home run lead when he clouts his 25th in the first inning, a bounce home run off Slim Harriss, but Babe Ruth, back in the lineup, golfs his 25th in the 4th, also off Slim. Gehrig has three hits and also swipes home. New York (49–20) wins its 5th straight while Boston loses its 12th straight.