Oklahoma's Buddy Hield (right) and Denzel Valentine of Michigan State played in Friday's East Regional Semifinal of the 2015 NCAA tournament in Syracuse. If you've got money riding on this year's NCAA tournament, you might want to hear about what happened to John Bovary's football pool. Maddie Meyer/Getty Images hide caption

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San Francisco 49ers linebacker Chris Borland, center, during an NFL football game in Santa Clara, Calif. Borland announced that he will retire after just one season to protect himself from brain injuries. Marcio Jose Sanchez/AP hide caption

itoggle caption Marcio Jose Sanchez/AP

Yoan Francisco, a rookie for the Havana Industriales, warms up before a game at Havana's Latin American Stadium. Cuban baseball has been facing hard times, but improved diplomatic relations with the U.S. have raised the possibility of increased cooperation and new opportunities. Eyder Peralta/NPR hide caption

itoggle caption Eyder Peralta/NPR