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Use "knucklers" in a sentence
"That moves knuckleballer Tim Wakefield to Wednesday, news that Teixeira—who has hit Buchholz's sinkers much harder than Wakefield's knucklers—greeted with a shake of the head."
"He's not anti-union, and he's not a verbal hard-knucklers."
"If you rode one of Wakefield's knucklers from here to Pittsburgh, it'd take just under three hours ..."