Los Angeles Dodgers pitcher Brandon Beachy throws against the Milwaukee Brewers on July 11 at Dodger Stadium. It marked his comeback from a second Tommy John surgery to his right elbow. Kevork Djansezian/Getty Images hide caption

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Baseball's Arms Race: The Price Of All Those Fast Pitches

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Marcus Lattimore retired from the NFL Wednesday, ending his hopes of returning from a knee injury to play for the San Francisco 49ers. Jason O. Watson/Getty Images hide caption

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Kelly Koshuta, a basketball star at James Madison High School, Vienna, Va., had surgery to repair an anterior cruciate ligament injured in 2012. Sarah L. Voisin/The Washington Post hide caption

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