Yost attended
Oregon State University from 1948 to 1951, winning the 1950 Oregon Amateur title during his time there. He won the
Pacific Northwest Amateur in 1953 and was selected for the
1955 Walker Cup on the
Old Course at St Andrews. The United States won by 10 matches to 2 with Yost winning both of his matches. After his return he won the 1955
Pacific Northwest Amateur and in 1958 he won the
Oregon Open. Yost played just once in the
Masters, in 1957 when he missed the cut. Yost was inducted to the
Oregon Sports Hall of Fame in 1982, the Oregon State Athletics Hall of Fame in 1990 and the Pacific Northwest Golf Association Hall of Fame in 1991. ==Amateur wins==