change-up
change-up ▶noun Baseball a deceptively slow pitch intended to throw off the batter's timing.
change-up ▶noun Baseball an unexpectedly slow pitch designed to throw off the batter's timing.
ch á nge- ù p 名詞 C U 〘野球 〙チェンジアップ 〘打者のタイミングをはずすスローボール 〙; ⦅米俗 ⦆目につく変化 .