In the last two years of his career he won nine marathons and lost only two -- the 1938 and 1939 Boston Marathons .
Despite his successes , Dengis never won the Boston Marathon .
In the last two years of Dengis ' career Dengis won nine marathons and lost only two -- the 1938 and Boston Marathon   Marathons .
Despite his successes , Dengis never won the Boston Marathon .