Sammy Mandell was an American World lightweight boxing champion from 1926-1930. Born in Rockford, Illinois, and named Salvatore Mandala, he was known as the "Rockford Sheik" due to his Rudolph Valentino like good looks and as the "Rockford Flash" due to his fast hands and foot speed. His father was an Albanian and his mother Italian. Statistical boxing website BoxRec ranks Mandell as the 13th greatest lightweight boxer to have ever lived. He was inducted into the International Boxing Hall of Fame in 1998.

Charles Henry "Jack" Blackburn was an American boxer and boxing trainer. Fighting in the first half of his career as a lightweight and later a welterweight, he was known for an exceptional defense and fought many men above his weight class, including six bouts with the great Sam Langford. He fought Joe Gans three times in no-decision bouts, defeating him once according to newspaper accounts and made good showings against Harry Lewis, Philadelphia Jack O'Brien, and Harry Greb. He found most of his fame training 1937 World Heavyweight Champion Joe Louis, but also had a significant role in training 1926 Lightweight Champion Sammy Mandell. He helped to train World Bantamweight Champion Bud Taylor and World Light-Heavyweight Champion John Henry Lewis as well.