List of Major League Baseball progressive single-season home run leaders
The Major League Baseball single-season record for the number of home runs hit by a batter has changed many times over the years. == Single-season records == == Progression == Summarized from The Baseball Encyclopedia for older information, and from various news stories for newer information: 5, by George Hall, Philadelphia Athletics (NL), 1876 (70-game schedule) 9, by Charley Jones, Boston Red Stockings (NL), 1879 (84-game schedule) 14, by Harry Stovey, Philadelphia Athletics (AA), 1883 (98-game schedule) 27, by Ned Williamson, Chicago White Stockings (NL), 1884 (113-game schedule, includes one tie game) Williamson benefited from a very short outfield fence in his home ballpark, Lakeshore Park.