Ever wondered how a knuckleball—one of most unpredictable weapons in a pitcher’s arsenal—works on a physics level, and why this wild-card throw tends to confound hitters? You won’t get much in-depth info on those questions in this purported look at the phenomenon, though you will find out everything you ever wanted to know about former Red Sox hurler Tim Wakefield and R.A. Dickey of the New York Mets, the last two big-leaguers to rely on the erratic “circus pitch” to send batters back to the dugout. Viewers who can’t get enough of ESPN’s “30 for 30” docs will lap up this dual portrait from Ricki Stern and Anne Sundberg (Joan Rivers: A Piece of Work). Nonfans, however, are about to find out exactly what the phrase inside baseball means.
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