Kammala wannan jumla: A 1973, gasar zakarun kasa da kasa ta ba da damar zuwa sabon gasar zakarun kasa da kasa ta IAAF. A shekarar 1973, mazajen Amurka ba su shiga ba amma matan Amurka sun lashe lambar tagulla ta tawagar. Amurkawa ba su sake shiga ba
1974 gasar zakarun duniya, kodayake Amurka Junior Men ya halarci kuma ya lashe lambar zinare ta tawagar a bayan nasarar da Rich Kimball ya samu a kan mai neman lambar yabo ta Olympics John Treacy. Mazan Amurka sun yanke shawarar ɗaukar Gasar Cin Kofin Duniya da gaske a 1975, suna gudanar da wani taron cancanta daban a watan Fabrairu. Matan Amurka ba su gudanar da tseren cancanta daban ba, sannan aka haɗu da maza, har zuwa 1998.