Utah Jazz player Rodney Hood injured his ankle during a game against the Minnesota Timberwolves earlier this year. Pain management in sports sometimes involves medications and their attendant risks.
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Members of the San Francisco 49ers kneel during the national anthem prior to a game against the Arizona Cardinals at University of Phoenix Stadium on Oct. 1.
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President Barack Obama laughs with Frank Deford as he awards him the 2012 National Humanities Medal for transforming how we think about sports, during a ceremony in the East Room of White House on July 10, 2013.
South Carolina head coach Frank Martin, second from left, is hugged by Chris Silva, left, as they celebrate after a second-round game against Duke in the NCAA men's college basketball tournament in Greenville, S.C., on Sunday.
New England Patriots quarterback Tom Brady sits on the bench during the fourth quarter of an NFL football game against the Kansas City Chiefs, in Kansas City, Mo., on Sept. 29, 2014. Brady will be forced to sit for the first four games of 2016 serving his "Deflategate" suspension.
Serbia's Novak Djokovic kisses the trophy after winning the final of the French Open tennis tournament against Britain's Andy Murray in four sets 3-6, 6-1, 6-2, 6-4, at the Roland Garros stadium in Paris, Sunday.