San Francisco Giants manager Bruce Bochy (right) had two heart stents inserted Thursday. He's seen here during the Giants' World Series victory parade last year. Jason O. Watson/Getty Images hide caption

itoggle caption Jason O. Watson/Getty Images

In this Aug. 27 photo, members of the Jackie Robinson West Little League baseball team participate in a rally in Chicago celebrating the team's U.S. Little League Championship. Little League International has stripped the team of its national title after finding the team falsified its boundary map. Charles Rex Arbogast/AP hide caption

itoggle caption Charles Rex Arbogast/AP

When the Giants' Gregor Blanco hit this solo home run to lead off the World Series' second game, three big parabolic microphones arranged around home plate captured the crack of his bat. Elsa/Getty Images hide caption

itoggle caption Elsa/Getty Images

Mike Trout and Los Angeles Angels have been named favorites to reach the World Series, as have Clayton Kershaw and the Los Angeles Dodgers. They're seen here when the two teams played in August. Matt Brown/Angels Baseball LP/Getty Images hide caption

itoggle caption Matt Brown/Angels Baseball LP/Getty Images

Former St. Louis Cardinals manager Tony La Russa is introduced before Game One of the World Series in 2011. La Russa will be inducted into the Baseball Hall of Fame on Sunday. Paul Sancya/AP hide caption

itoggle caption Paul Sancya/AP

Horace Wilson and other members of his family in a portrait believed to date to the 1860s. He's the mustachioed fellow standing at top right. Courtesy of Abigail Sanborn hide caption

itoggle caption Courtesy of Abigail Sanborn

Retired baseball pitcher Tommy John, left, and Dr. Frank Jobe at the National Baseball Hall of Fame in July 2013. Jobe was honored for the pioneering surgery he first performed on John's elbow in 1974. Mike Groll/AP hide caption

itoggle caption Mike Groll/AP