Slim was a 6’6″ 180-lb, hard-throwing Texan. Pitching for the A’s against the White Sox, he gave up singles to the first 2 hitters, then retired 27 in a row. While teammate Eddie Rommel was winning an AL-high 27 games in 1922, Harriss was losing a league-high 20. His only winning season was 1925 (19-12). He again led the AL in losses in 1927, with 21 for the Red Sox.