So if I understand you, you want to show the game and the date, but no time if the time is TBA. Is that correct? Leave the schedule you showed as is, but without showing the TBA?
Hummm…, there is a filter that will allow you to change the “TBA” to something else, like blank. Filters require that you write a bit of code (in your theme’s functions.php, say). Or, you could create a translation to a mysterious language of your choice in which “TBA” translates to blank.
-Mark