Haydel signed with the Milwaukee Braves as a free agent in 1962.
The following year, he was traded along with Dick LeMay and Merritt Ranew to the Chicago Cubs for Dave Gerard and Danny Murphy.
In 1966, Haydel was selected in the Minor League Draft by the San Francisco Giants.
During his time with the Twins, Haydel played at the Major League level in 1970 and 1971.
This biographical article relating to an American baseball pitcher born in the 1940s is a stub.