Elfrink played sports while attending Coe College in Cedar Rapids, Iowa. He was a key player on the football team of 1914 under head coach Moray Eby that the college considers to be one of the best teams the school fielded of all time.[2]
Coaching career
Wichita State
Elfrink was the 12th head football coach at Fairmount College—known as now Wichita State University—Wichita, Kansas, serving for one season, in 1920 season, and compiling a record of 3–4–2.[3] He also served that academic year as head basketball coach, leading his team to a record of 16–2.[4]
UC Davis
The next year, Elfrink became the head football coach at the University Farm—now known as the University of California, Davis—for the 1921 season.[5]