Definition of "change-up" [change-up]

• An unexpected event. (noun)
• A pitch thrown with the arm motion of a fastball, but which travels at a much slower velocity because it is released without the fingers adding power to the delivery. (noun)

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• "But Boston Scientific, which has been restructuring to cut costs, reduce employee ranks and change-up product offerings, said its board has authorized a new $1 billion buyback program."
• "Maddow is great, the change-up artist, like Greg Maddux."
• "Bergeron admits he liked the old set the way it was, but thinks the change-up — coupled with the cast — will reinvigorate the show and is ultimately necessary during a very stacked fall."