Kammala wannan jumla: A zagaye na farko, kungiyoyin da suka zo na gaba a wasannin Pan American na 2011, Mexico da Colombia, sun ki shiga, amma Venezuela, kungiyar da ta zo ta karshe, ta yanke shawarar yin rajista don gasar ta amfani da yankin mai masaukin baki. Tunda babu sauran kungiyoyin Amurka, Asiya, Oceania, ko Afirka da suka rage don zaɓar kansu, wurare uku na gaba sun tafi ga mahalarta uku a gasar.
2012 Gasar Wasannin Wasannin Ruwa na Turai waɗanda ba su riga sun cancanci shiga wasannin Olympics ba ko kuma sun riga sun shiga wannan gasar - Netherlands, Macedonia da Turkiyya.