An overpowering right-handed pitcher, Deloch played for St. Louis area teams from 1962 to 1983. He pitched for four seasons at Soldan High School between 1962 and 1966, hurling two no-hitters during that span.

From 1966 to 1983, Clarence pitched for the Mathews-Dickey Knights in the Tandy League and the Heine Meine Semi-Pro League. He helped the Knights win the NBC Missouri State Championship in 1973. They advanced to the national tournament that year. Deloch was a little league baseball coach for many years.