Seattle Mariners pitcher Felix Hernandez reacts after shortstop Brendan Ryan throws out Yoenis Cespedes of the Oakland Athletics to end the fourth inning on Monday, April 1, in Oakland, California. The Mariners won 2-0 on Opening Day, the official start of the 2013 Major League Baseball season.
Baseball's Opening Day —
Seattle Mariners pitcher Felix Hernandez reacts after shortstop Brendan Ryan throws out Yoenis Cespedes of the Oakland Athletics to end the fourth inning on Monday, April 1, in Oakland, California. The Mariners won 2-0 on Opening Day, the official start of the 2013 Major League Baseball season.
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A bag of balls sits on the field during batting practice for the Oakland Athletics game on April 1.
Baseball's Opening Day —
A bag of balls sits on the field during batting practice for the Oakland Athletics game on April 1.
Ezra Shaw/Getty Images
An Oakland fan cheers during a pregame ceremony April 1 at O.co Coliseum.
Baseball's Opening Day —
An Oakland fan cheers during a pregame ceremony April 1 at O.co Coliseum.
Ezra Shaw/Getty Images
The St. Louis Cardinals line up for introductions before their game against the Arizona Diamondbacks at Chase Field in Phoenix. The Diamondbacks won 6-2.
Baseball's Opening Day —
The St. Louis Cardinals line up for introductions before their game against the Arizona Diamondbacks at Chase Field in Phoenix. The Diamondbacks won 6-2.
Christian Petersen/Getty Images
A young Arizona Diamondbacks fan watches the action against the Cardinals.
Baseball's Opening Day —
A young Arizona Diamondbacks fan watches the action against the Cardinals.
Christian Petersen/Getty Images
Cardinal teammates congratulate Matt Carpenter in the dugout after he scored a first-inning run.
Baseball's Opening Day —
Cardinal teammates congratulate Matt Carpenter in the dugout after he scored a first-inning run.
Christian Petersen/Getty Images
Tim Hudson of the Atlanta Braves pitches to the Philadelphia Phillies at Turner Field in Atlanta. The Braves beat the Phillies 7-5 and the Angels beat the Reds 3-1.
Baseball's Opening Day —
Tim Hudson of the Atlanta Braves pitches to the Philadelphia Phillies at Turner Field in Atlanta. The Braves beat the Phillies 7-5 and the Angels beat the Reds 3-1.
Kevin C. Cox/Getty Images
Braves fans pose for a picture before the start of the game against the Phillies.
Baseball's Opening Day —
Braves fans pose for a picture before the start of the game against the Phillies.
Kevin C. Cox/Getty Images
Dan Uggla of the Atlanta Braves reacts after a solo home run against the Philadelphia Phillies.
Baseball's Opening Day —
Dan Uggla of the Atlanta Braves reacts after a solo home run against the Philadelphia Phillies.
Kevin C. Cox/Getty Images
Cincinnati Reds fans watch their team practice before their game against the Los Angeles Angels of Anaheim in Cincinnati.
Baseball's Opening Day —
Cincinnati Reds fans watch their team practice before their game against the Los Angeles Angels of Anaheim in Cincinnati.
JOHN SOMMERS II/Reuters/Landov
Angels pitcher Jered Weaver reacts after Shin-Soo Choo of the Reds was called safe at home plate.
Baseball's Opening Day —
Angels pitcher Jered Weaver reacts after Shin-Soo Choo of the Reds was called safe at home plate.
Andy Lyons/Getty Images
Fans file into the Great American Ball Park in Cincinnati before the Reds game against the Angels.
Baseball's Opening Day —
Fans file into the Great American Ball Park in Cincinnati before the Reds game against the Angels.
Andy Lyons/Getty Images
Tori Hunter of the Detroit Tigers stands on deck while the first pitch is thrown during the Opening Day game against the Minnesota Twins in Minneapolis. The Tigers won 4-2.
Baseball's Opening Day —
Tori Hunter of the Detroit Tigers stands on deck while the first pitch is thrown during the Opening Day game against the Minnesota Twins in Minneapolis. The Tigers won 4-2.
Hannah Foslien/Getty Images
Players from the Twins and the Tigers stand along the baselines during the opening ceremony at Target Field.
Baseball's Opening Day —
Players from the Twins and the Tigers stand along the baselines during the opening ceremony at Target Field.
Hannah Foslien/Getty Images
Joe Mauer of the Minnesota Twins looks on during batting practice before taking on the Detroit Tigers.
Baseball's Opening Day —
Joe Mauer of the Minnesota Twins looks on during batting practice before taking on the Detroit Tigers.
Hannah Foslien/Getty Images
Paul Konerko of the Chicago White Sox shakes hands with Manager Robin Ventura during player introductions before the team's game against the Kansas City Royals in Chicago. The White Sox beat the Royals 1-0.
Baseball's Opening Day —
Paul Konerko of the Chicago White Sox shakes hands with Manager Robin Ventura during player introductions before the team's game against the Kansas City Royals in Chicago. The White Sox beat the Royals 1-0.
Jonathan Daniel/Getty Images
Pretzels are sold at a stand before the game between the White Sox and the Royals.
Baseball's Opening Day —
Pretzels are sold at a stand before the game between the White Sox and the Royals.
Jonathan Daniel/Getty Images
Fans wait to enter U.S. Cellular Field in Chicago for the White Sox's game against the Royals.
Baseball's Opening Day —
Fans wait to enter U.S. Cellular Field in Chicago for the White Sox's game against the Royals.
Jonathan Daniel/Getty Images
Pitcher Clayton Kershaw of the Los Angeles Dodgers is hugged by catcher A.J. Ellis after getting the final out of his complete game shutout against the San Francisco Giants on April 1 in Los Angeles. The Dodgers won 4-0.
Baseball's Opening Day —
Pitcher Clayton Kershaw of the Los Angeles Dodgers is hugged by catcher A.J. Ellis after getting the final out of his complete game shutout against the San Francisco Giants on April 1 in Los Angeles. The Dodgers won 4-0.
Stephen Dunn/Getty Images
Carl Crawford of the Los Angeles Dodgers slides into home under pitcher Santiago Casilla of the San Francisco Giants.
Baseball's Opening Day —
Carl Crawford of the Los Angeles Dodgers slides into home under pitcher Santiago Casilla of the San Francisco Giants.
Stephen Dunn/Getty Images
Dodgers relief pitcher Brandon League signs autographs during batting practice before taking on the Giants.
Baseball's Opening Day —
Dodgers relief pitcher Brandon League signs autographs during batting practice before taking on the Giants.
ALEX GALLARDO/Reuters/Landov
Fans watch the Colorado Rockies take on the Milwaukee Brewers on Opening Day in Milwaukee. The Brewers defeated the Rockies 5-4.
Baseball's Opening Day —
Fans watch the Colorado Rockies take on the Milwaukee Brewers on Opening Day in Milwaukee. The Brewers defeated the Rockies 5-4.
Tom Lynn/Getty Images
Carlos Gomez of the Milwaukee Brewers is tagged out during a rundown by Jhoulys Chacin of the Colorado Rockies, left, in the first inning.
Baseball's Opening Day —
Carlos Gomez of the Milwaukee Brewers is tagged out during a rundown by Jhoulys Chacin of the Colorado Rockies, left, in the first inning.
Tom Lynn/Getty Images
The lines are painted on the field before the start of the Brewers-Rockies game.
Baseball's Opening Day —
The lines are painted on the field before the start of the Brewers-Rockies game.
Tom Lynn/Getty Images
Fans get rally towels as they enter the stadium for the game between the Brewers and the Rockies.
Baseball's Opening Day —
Fans get rally towels as they enter the stadium for the game between the Brewers and the Rockies.
Tom Lynn/Getty Images
Batting helmets sit on shelves in the Milwaukee Brewers' dugout during the game against the Colorado Rockies.
Baseball's Opening Day —
Batting helmets sit on shelves in the Milwaukee Brewers' dugout during the game against the Colorado Rockies.
Tom Lynn/Getty Images
Welington Castillo of the Chicago Cubs makes a catch in foul territory during the game against the Pittsburgh Pirates on April 1 in Pittsburgh. The Cubs won 3-1.
Baseball's Opening Day —
Welington Castillo of the Chicago Cubs makes a catch in foul territory during the game against the Pittsburgh Pirates on April 1 in Pittsburgh. The Cubs won 3-1.
Justin K. Aller/Getty Images
Pirates fans cheer during the game against the Cubs.
Baseball's Opening Day —
Pirates fans cheer during the game against the Cubs.
Justin K. Aller/Getty Images
A woman and her son walk into PNC Park before the game between the Pirates and the Cubs.
Baseball's Opening Day —
A woman and her son walk into PNC Park before the game between the Pirates and the Cubs.
Justin K. Aller/Getty Images
Members of the New York Yankees and the Boston Red Sox line up for player introductions on April 1 at Yankee Stadium in New York. The Yankees fell to the Red Sox 8-2.
Baseball's Opening Day —
Members of the New York Yankees and the Boston Red Sox line up for player introductions on April 1 at Yankee Stadium in New York. The Yankees fell to the Red Sox 8-2.
Elsa/Getty Images
First responders from Newtown, Connecticut, serve as the color guard while the national anthem is played before the Yankees-Red Sox game.
Baseball's Opening Day —
First responders from Newtown, Connecticut, serve as the color guard while the national anthem is played before the Yankees-Red Sox game.
Elsa/Getty Images
A special "Yankee Express" train travels from Grand Central Terminal to the Yankee Stadium stop on Opening Day.
Baseball's Opening Day —
A special "Yankee Express" train travels from Grand Central Terminal to the Yankee Stadium stop on Opening Day.
Spencer Platt/Getty Images
Fans enter Yankee Stadium on April 1 for the game against the Red Sox.
Baseball's Opening Day —
Fans enter Yankee Stadium on April 1 for the game against the Red Sox.
Spencer Platt/Getty Images
Yankee fans gather outside the stadium before the game.
Baseball's Opening Day —
Yankee fans gather outside the stadium before the game.
Spencer Platt/Getty Images
The New York Mets and the San Diego Padres line up for the national anthem on April 1 at Citi Field in New York. The Mets won 11-2.
Baseball's Opening Day —
The New York Mets and the San Diego Padres line up for the national anthem on April 1 at Citi Field in New York. The Mets won 11-2.
Mike Stobe/Getty Images
Jonathon Niese of the New York Mets, right, is congratulated by first-base coach Tom Goodwin after hitting a single.
Baseball's Opening Day —
Jonathon Niese of the New York Mets, right, is congratulated by first-base coach Tom Goodwin after hitting a single.
Mike Stobe/Getty Images
Fans enter the Jackie Robinson rotunda before the game between the New York Mets and the San Diego Padres.
Baseball's Opening Day —
Fans enter the Jackie Robinson rotunda before the game between the New York Mets and the San Diego Padres.
Mike Stobe/Getty Images
A dog shows his Mets spirit before the game against the Padres.
Baseball's Opening Day —
A dog shows his Mets spirit before the game against the Padres.
Mike Stobe/Getty Images
Pitcher Stephen Strasburg of the Washington Nationals throws against the Miami Marlins on April 1 at Nationals Park in Washington. The Nationals defeated the Marlins 2-0.
Baseball's Opening Day —
Pitcher Stephen Strasburg of the Washington Nationals throws against the Miami Marlins on April 1 at Nationals Park in Washington. The Nationals defeated the Marlins 2-0.
Rob Carr/Getty Images
Nationals fans cheer General Manager Mike Rizzo before the game against the Marlins. Rizzo accepted the award for MLB Executive of the Year.
Baseball's Opening Day —
Nationals fans cheer General Manager Mike Rizzo before the game against the Marlins. Rizzo accepted the award for MLB Executive of the Year.
Win McNamee/Getty Images
Former Staff Sgt. Clint Romesha, a Medal of Honor recipient, throws the ceremonial first pitch before the opening day game between the Nationals and the Marlins.
Baseball's Opening Day —
Former Staff Sgt. Clint Romesha, a Medal of Honor recipient, throws the ceremonial first pitch before the opening day game between the Nationals and the Marlins.
Win McNamee/Getty Images
Fans enter Nationals Park for the Nationals-Marlins game.
Baseball's Opening Day —
Fans enter Nationals Park for the Nationals-Marlins game.
Win McNamee/Getty Images
A fan's ticket is scanned at Nationals Park.
Baseball's Opening Day —
A fan's ticket is scanned at Nationals Park.
Win McNamee/Getty Images
Members of the Miami Marlins warm up on the field before the game against the Washington Nationals.
Baseball's Opening Day —
Members of the Miami Marlins warm up on the field before the game against the Washington Nationals.
Rob Carr/Getty Images