Frank Welch lettered four times each in football (1921-22-23-24) and basketball (1922-23-24-25), earning all-North Central Conference honors in both sports. Welch quarterbacked SDSU's first North Central Conference championship football team and one of his receivers was his brother, Earl.
In both 1923 and 1924, Welch provided the spark which gave the Jackrabbits Hobo Day wins. The 1923 saw the Jacks trailing 20-7 when Welch and his brother got their passing combination going and gave SDSU a 27-20 win. Welch fired a touchdown pass in the closing minutes of the 1924 Hobo Day game, helping SDSU to a 10-3 win over the University of South Dakota. He was co-captain of the 1924 football team.
Welch was born in Luverne, Minn., but moved to Madison, S.D., as an infant. He graduated from Madison High School, where he played on teams which made a couple trips to the national basketball tournaments. Welch graduated cum laude in 1925. After a short coaching stint at Webster, Welch received a scholarship to the University of Missouri where he received his master's degree in dairy manufacturing. Welch died of a heart attack June 25, 1945. At the time of his death, he was manager of four production farms and a market milk and ice cream plant.