Over-Under
During Multiball, while two balls are cradled on the same flipper, a player taps the flipper lightly so that one ball is freed while retaining control of the other ball. This is immediately followed by the player either flipping the other ball away at an intended target, or post passing so that the other ball moves to the opposite flipper. Finally, the player catches the first ball onto the original flipper to regain control.
This is an advanced form of the Cradle Separation.
Animation credit: Dead Flip
https://www.twitch.tv/dead_flip
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