i dont understand the purpose of Batter Up... they release a whole pre-debut mv without the member that supposed to be the centre (and now they're pushing Ahyeon as the centre).. they not even performing it on music show.. seems like Batter Up is a rush decision made by YG ent and i dont see the purpose of it being released.. what is the point of releasing a single without the member that you going to push ? its better to just wait for Ahyeon and release a double tittle track like BP did with Boombayah & Whistle.. i doubt they will ever perform Batter Up as Ahyeon is not even included on their coreographer..
edit : if its their debut, why do you think YG choose to let the girls debut without Ahyeon only for her to join them 5 months later ? YG could just wait for another 5 months, then went all out like how they promote Sheesh