FILE - In this Sept. 28, 2012, file photo, Arizona Diamondbacks' Justin Upton waits on deck during the first inning of a baseball game against the Chicago Cubs in Phoenix. A person familiar with the situation says Arizona has traded Upton to the Atlanta Braves in a deal that sends All-Star third baseman Martin Prado to the Diamondbacks. The person spoke to The Associated Press on condition of anonymity on Thursday, Jan. 24, 2013, because the trade has not officially been announced. (AP Photo/Matt York)
** FILE ** In this July 19, 2007, file photo, San Francisco Giants' Barry Bonds hits a three-run home run during the seventh inning of a baseball game against the Chicago Cubs in Chicago. With the cloud of steroids shrouding the candidacies of Bonds, Roger Clemens and others, baseball writers on Wednesday, Jan. 9, 2013, might not elect anyone to the Hall of Fame for only the second time in four decades. (AP Photo/M. Spencer Green, File)
Edwin Jackson was 10-11 with a 4.03 ERA for the Nationals last season. He agreed to a four-year deal worth $52 milion with the Chicago Cubs, who also have added starting pitchers Scott Baker and Scott Feldman this offseason. (Associated Press)
Edwin Jackson was 10-11 with a 4.03 ERA for the Nationals last season. He agreed to a four-year deal worth $52 milion with the Chicago Cubs, who also have added starting pitchers Scott Baker and Scott Feldman this offseason. (Associated Press)
Washington Nationals' starting pitcher Gio Gonzalez delivers the pitch to the Chicago Cubs in the first inning during their baseball game at Nationals Park, Wednesday, Sept. 5, 2012, in Washington. (AP Photo/Richard Lipski)
Adam Greenberg heads out of the dugout for batting practice before a baseball game against the New York Mets in Miami, Tuesday, Oct. 2, 2012. The Marlins signed the former Chicago Cubs prospect to a one-day contract effective Oct. 2. He is to bat as a pinch-hitter against the Mets. (AP Photo/Alan Diaz)
Adam Greenberg heads out of the dugout for batting practice before a baseball game against the New York Mets in Miami, Tuesday, Oct. 2, 2012. The Marlins signed the former Chicago Cubs prospect to a one-day contract effective Oct. 2. He is to bat as a pinch-hitter against the Mets. (AP Photo/Alan Diaz)
This image released by NBC shows host Matt Lauer, left, posing with Adam Greenberg after an appearance on the "Today" show, Thursday, Sept. 27, 2012 in New York. The Marlins said Thursday that they have signed Greenberg to a one-day contract, effective Oct. 2, and will play him that day against the New York Mets. Greenberg made his big-league debut for the Chicago Cubs on July 9, 2005 against the Marlins, getting one plate appearance but no official at-bat after a 92 mph fastball that struck him in the head. Greenberg was the subject of a campaign called "One At Bat," which lobbied teams to give him a second chance. The Marlins publicly extended the invitation to Greenberg on NBC's "Today" show Thursday morning. (AP Photo/NBC NewsWire, Peter Kramer)
This image released by NBC shows host Matt Lauer, left, posing with Adam Greenberg after an appearance on the "Today" show, Thursday, Sept. 27, 2012 in New York. The Marlins said Thursday that they have signed Greenberg to a one-day contract, effective Oct. 2, and will play him that day against the New York Mets. Greenberg made his big-league debut for the Chicago Cubs on July 9, 2005 against the Marlins, getting one plate appearance but no official at-bat after a 92 mph fastball that struck him in the head. Greenberg was the subject of a campaign called "One At Bat," which lobbied teams to give him a second chance. The Marlins publicly extended the invitation to Greenberg on NBC's "Today" show Thursday morning. (AP Photo/NBC NewsWire, Peter Kramer)
