In high school, Silas was named a second-team Parade All-American and voted California Mr. Basketball. He played college basketball for the Creighton Bluejays, earning second-team All-American honors as a senior in 1964. He was selected in the second round of the 1964 NBA draft, and played 16 seasons in the league. After his playing career, Silas was a head coach for 12 seasons.
