Pitchers rely on the rosin bag to keep their hands try for an optimal grip on the ball

A lot of writers rely on both spell check and proofreading to keep their work error-free, but this writer (of "8 Obscure Rules From the World of Sports" on mental_floss online on April 28, 2009) skipped either both or just the proofreading. Try should be dry. Click the image to enlarge it.