On September 29, 1908, Ed Walsh pitched both ends of a doubleheader and only allowed one walk setting an American League record. On September 23, 1916, Grover Alexander matched the feat and set the National League record, but then one-upped his fellow-future hall of famer by duplicating the feat on September 3, 1917. However, neither pitcher holds the Major League record as Guy Hecker of Louisville (American Association) also pitched both ends of a doubleheader on July 4, 1884 and did not walk a single batter in either game.
The following pitchers started the game on the mound and threw a Major League record four consecutive bases on balls before retiring a single batter:
The longest game ever thrown (twenty-one innings) by a single pitcher without allowing a single walk was played on July 17, 1914 and the control king of record was Babe Adams.