America's BillTilden, one of the game's greatest players, won back-to-back post-war titles, but within three years French men were following Lenglen's lead in dominating their event.
Federer will play for a sixth consecutive US Open title on Monday, which would American Bill Tilden's record of the 1920s, and a 16th Grand Slam title that would extend his own all-time record.
Federer, 28, was seeking his sixth consecutive U.S. Open win, which would have equaled the feat achieved in 1925 by American BillTilden, who then went on to claim his seventh U.S. Open title in 1929.