He was born in Des Moines, Iowa, but moved to Manson early.
The popularity of balkline faded in the late 1920s and early 1930s, causing Cochran to switch to three-cushion, in which he won his first world title in 1933.
In 1945, Cochran set a new world record (now surpassed) by achieving a game average of 3 (60 points in 20 innings) in a match he won against Willie Hoppe.
He retired from serious competition in 1946 due to arthritis, but did make a comeback attempt in 1954.
Cochran was inducted posthumously into the Billiard Congress of America's Hall of Fame in 1967.