Members of the St. Louis Cardinals line up for a moment of silence following an explosion at the Boston Marathon, all wearing the No. 42 in honor of Jackie Robinson, before a baseball game against the Pittsburgh Pirates in Pittsburgh Monday, April 15, 2013. (AP Photo/Gene J. Puskar)
Members of the St. Louis Cardinals line up for a moment of silence following an explosion at the Boston Marathon, all wearing the No. 42 in honor of Jackie Robinson, before a baseball game against the Pittsburgh Pirates in Pittsburgh Monday, April 15, 2013. (AP Photo/Gene J. Puskar)
Washington Nationals outfielder Bryce Harper, pictured here with Thomas Tull, one of the producers of '42,' attended a reception at the White House on Tuesday to meet President Obama and screen the move, which is about Jackie Robinson breaking the color barrier in baseball. (Alba V. Tull photo)
Washington Nationals outfielder Bryce Harper, pictured here with Thomas Tull, one of the producers of '42,' attended a reception at the White House on Tuesday to meet President Obama and screen the move, which is about Jackie Robinson breaking the color barrier in baseball. (Alba V. Tull photo)
First lady Michelle Obama (right) — next to Rachel Robinson, the widow of baseball legend Jackie Robinson — introduces a panel of the cast and crew of the movie "42" before a workshop for high school and college students on Tuesday, April 2, 2013, in the State Dining Room of the White House in Washington. (AP Photo/Jacquelyn Martin)
First lady Michelle Obama (right) — next to Rachel Robinson, the widow of baseball legend Jackie Robinson — introduces a panel of the cast and crew of the movie "42" before a workshop for high school and college students on Tuesday, April 2, 2013, in the State Dining Room of the White House in Washington. (AP Photo/Jacquelyn Martin)
FILE - This April 13, 1997, file photo shows former major league baseball player Bobby Thomson during a salute to Jackie Robinson, in Union, N.J. Famed home run hitter Bobby Thomson died Monday night, Aug. 16, 2010. He was 86. (AP Photo/Daniel Hulshizer, File)
