captured the World Lightweight Championship in July, 1930,
with a first round knockout (1:47) of champion
Sammy Mandell. He surrendered the title four months later
to Tony Canzoneri in a first round KO. Three years earlier,
Singer and Canzoneri had battled to a 10-round draw. In
his career, Singer won 61 of 72 pro fights (25 by KO),
drawing twice, and losing nine.