During his career, he coached many sports, including football, basketball, baseball, and track and field, but the majority of his work was in ice hockey.

Prettyman also coached the United States ice hockey team at the 1936 Winter Olympics, which won the bronze medal.

[2] At the Springfield Training school, Prettyman played on the varsity football, baseball, and ice hockey teams.

[9] Prettyman was the head coach of the United States hockey team at the 1936 Winter Olympics in Garmisch-Partenkirchen, Germany.

[2][8] Prettyman led a team that included United States Hockey Hall of Fame member John Garrison.

In fitting retribution, Francis Baker continued his studies at Hamilton after the Olympics, became a doctor and landed as a medic on the beaches of Normandy in 1944 to make good on his locker room promise to Hitler eight years earlier.

"[2] Even before he died Prettyman was the first person elected to the American Hockey Coaches Association’s Hall of Fame.