When it comes to antonyms for the phrase "new ballgames," there are several options. If "new" is taken to mean "recently created or discovered," then antonyms could include "old," "ancient," or "outdated." Similarly, if "ballgames" is taken to mean "activities or pursuits," antonyms could include "work," "duty," or "obligation." Alternatively, if "new" is interpreted as "exciting or unfamiliar," antonyms might include "boring," "tedious," "monotonous," or "predictable." Similarly, antonyms for "ballgames" in this context could include "mundane," "unstimulating," or "uninspired.