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American sports

A trainer kneels over the Boston Bruins' Nathan Horton after Horton was hit by the Vancouver Canucks' Aaron Rome in Boston, Massachusetts, June 6, 2011.

Global sports deal with concussions differently

Books

Youth sports around the globe are taking concussion risks seriously. But some take it more seriously than others.

American John Isner serves during a match at the 2014 US Open. Isner is only one of two Americans among the top 50 men's players, and has never appeared in the final of a major tournament.

Why have the American men’s tennis stars disappeared?

Sports