On 24 April 1916, in New Orleans, Lewis lost the title to Britton. He reclaimed it on 25 June 1917, at Westwood Field, Dayton, Ohio. He lost the title for the last time on 17 March 1919, in Canton, Ohio, when Britton knocked him out in the 9th round — the only knockout of the series. The roundup of his matches with Britton: Lewis won 3, lost 4, and had 1 draw. There were 12 no decisions. After his last loss to Britton, Lewis returned to England.