Assault!! Run to the Ballpark (突撃！！球場へ走れ Totsugeki!! Kyūjō e Hashire) is the first episode of Battle Fever J. This premiere episode marked the revival of Super Sentai following the original two Sentai series, Himitsu Sentai Gorenger and J.A.K.Q. Dengekitai, the first new production since the epilogue J.A.K.Q. Dengekitai vs. Gorenger (released on March 18th 1978), and the return of Sentai to television since the finale of J.A.K.Q. (aired on December 24th 1977), having had its run cut short, and the first series without franchise co-founder Shotaro Ishinomori. It also notably introduces a concept that will be the key factor to change the franchise starting from this series' fifth episode.