Luigi Giuseppe d'Ambrosio (November 9, 1913 – April 25, 1995), lalso known as Lou Ambers, was an American World Lightweight boxing champion who fought from 1932 to 1941.

[2][3] Born Luigi Giuseppe d'Ambrosio on November 8, 1913, in Herkimer, Ambers started out in a large Italian family, struggling to find an identity.

He defeated future world junior welterweight champion Johnny Jadick in a ten round unanimous decision on March 19, 1934, in Holyoke, Massachusetts.

[2] Ambers defeated former world junior welterweight claimant Sammy Fuller on March 1, 1935, in a fifteen round unanimous decision at Madison Square Garden, New York City.

[7][8][9] Before a crowd of 8,266, Ambers defeated the highly rated former junior lightweight champion Frankie Klick in a ten round points decision at Madison Square Garden on January 3, 1936.

Returning after his broken jaw only six months earlier, Ambers took some stiff shots to the chin in the sixth and seventh, but gained a significant points margin, winning eight of the ten rounds.

As a former sparring partner of Canzoneri, he carried the fight to his opponent and mentor from the outset, turned back two spirited rallies, and won by a wide margin in a match that defined him as a boxer and competitor.

[13] Ambers won a lightweight title bout against Pedro Montanez on September 23, 1937, before an exceptional crowd of around 32,000, in a fifteen round mixed decision at New York's Polo Grounds.

In a previous fight in the same city on December 6, 1937, Ambers won in a ten round unanimous decision on a large boxing ticket that featured a crowd of 12,000.

With a rapid left and effective right uppercut, Ambers gained a strong points margin, and had an ailing Wallace missing throughout the bout.

In their last meeting, Ambers achieved an eleventh round technical knockout of "Baby" Arizmendi on February 24, 1939, at New York's Madison Square Garden.

Penalized for low blows in the second, fifth, seventh, ninth, and eleventh rounds, Armstrong would have probably won the fight had it not been for his loss of points for fouls.

[2] James Dawson of The New York Times wrote that "The title was not won on competition alone but on fighting rules and ethics...Armstrong was the victim of an injustice".

[2] After a slow start, Ambers appeared game, taking tough blows from Jenkins in the third through the sixth, while still using his left effectively at times.