Derrick Delmore was born on December 12, 1978, at Andrews Air Force Base in Maryland.

During the 1997–98 ISU Junior Series, Delmore won silver in Bulgaria and finished sixth in Hungary.

In December 1997, he was awarded gold ahead of Russia's Sergei Davydov and China's Li Yunfei at the 1998 World Junior Championships in Saint John, New Brunswick, Canada.

A right hip flexor injury began bothering him in early November 2002 after he fell on a quad attempt at the 2002 Skate Canada International.

[3] Delmore appeared as the male lead in a musical production of Cold As Ice at the Gateway Playhouse in 2007[4] in New York.