 His show career started when he was named champion yearling stallion at the Texas Cowboy Reunion Quarter Horse Show in Stamford, Texas.He was grand champion stallion in the 1940s at Denver's National Western Stock Show, the Southwestern Exposition and Livestock Show in Fort Worth, State Fair of Texas in Dallas and the American Royal in Kansas City.As a 4-year-old, in 1948, Poco Bueno started his performance career as a cutting horse, trained and shown by Pine Johnson, who worked for E. Paul Waggoner at his 3D Stock Farm in Arlington, TX.