I never "got" the pun "Off the Baa" (the soccer game from "Shaun The Sheep"), until I tried a bit longer with Google Autocomplete and found the TV show "Off the Ball". This still seemed off (pun intended) to me, and then I remembered another pun (Warren mag story) "Off the Beaten Empath", but here I simply was familiar with the standing phrase "Off the beaten path".
Do I infer correctly that "Off the X" is a fancy way of saying "away from X, not in X's zone,..."? I still have a few problems with the ball, as it is a rather smallish object, compared to e.g. the path, the radar, or the shelf, which are "extensional". (Maybe, as the show is jocular, so is the phrase usage? I.e., they inserted something into the "Off the X" template which doesn't fit that well?)