Korean Baseball Takes Hard Line on Cabbage Add to spitballs and corking the bat another banned maneuver for getting a bit of an advantage: ice cold cabbage under the cap. The Korea Baseball Organization has banned employing frozen cabbage to cool off. The practice came to light after a pitcher with the Doosan Bears lost his cap during a game last weekend. And out fell the incriminating cabbage leaves. South Korea's baseball authorities ruled flying cabbage leaves are a distraction.