The Washington Nationals unfurl the American flag before the singing of the national anthem on Opening Day.
2 of 29Simon Bruty/SI
Bryce Harper motions to the audience after clubbing his second home run of the game. Harper homered in his first two at-bats of the season against the Marlins.
3 of 29Frank Franklin II/AP
Mets' third baseman David Wright fields a ground ball hit by San Diego Padres second baseman Jedd Gyorko. Wright also stole two bases in the 11-2 victory.
4 of 29Chuck Solomon/SI
Collin Cowgill capped a successful New York debut with a grand slam in an 11-2 rout of the San Diego Padres.
5 of 29 Fred Vuich/SI
Andrew McCutchen and Russell Martin take batting practice in the snow before the Pirates' opener against the Chicago Cubs in Pittsburgh.
6 of 29Fred Vuich/SI
The Cubs' Anthony Rizzo smashes a home run in his first at-bat of the season during the opener against the Pittsburgh Pirates.
7 of 29Al Tielemans/SI
Red Sox outfielder Shane Victorino shoots a single through the middle for his first hit of the 2013 season.
8 of 29Al Tielemans/SI
Boston's Jon Lester struck out seven Yankees in his five innings of Opening Day work. The Red Sox won 8-2.
9 of 29Kathy Willens/AP
New York Yankees relief pitcher Mariano Rivera tips his cap to Red Sox players on Opening Day. Rivera missed most of the 2012 season after injuring himself during batting practice.
10 of 29 Robert Beck/SI
The Los Angeles Dodgers kicked off their season against the Giants at Dodger Stadium.
11 of 29 Jae C. Hong/AP
Clayton Kershaw became the first pitcher to hit a homer on Opening Day since Joe Magrane for the Cardinals in 1988. The Dodgers' ace added to his first career home run by throwing a four-hit shutout.
12 of 29 Andy Lyons/Getty Images
Jered reacts after Shin-Soo Choo of the Cincinnati Reds was called safe at home at Great American Ball Park. The Angels won 3-1 in 13 innings.
13 of 29 Andy Lyons/Getty Images
Offseason acquisition Josh Hamilton went 0 for 4 with a pair of walks in his first game as an Angel. Albert Pujols also failed to get a hit, leaving the Angels with nothing out of their power spots.
14 of 29 David Goldman/AP
Justin Upton, right, congratulates his brother and teammate B.J. after hitting a home run against the Phillies. Freddie Freeman and Dan Uggla also homered for the Braves.
15 of 29David Goldman/AP
Phillies starting pitcher Cole Hamels gave up five runs on seven hits, including three homers, with five strikeouts and one walk in five innings of a 7-5 loss at Atlanta. The three homers allowed matched his high from last season.
16 of 29 Hannah Foslien/Getty Images
Prince Fielder races home to score on a wild pitch by Minnesota's Josh Roenicke in the eighth inning of Detroit's 4-2 victory.
17 of 29 Hannah Foslien/Getty Images
Justin Verlander won on opening day for the first time in six tries, striking out seven over five shutout innings at frosty Target Field, sending the defending AL champions past Minnesota, 4-2.
18 of 29Jonathan Daniel/Getty Images
Members of the Chicago White Sox and the Kansas City Royals stand during the National Anthem before the Opening Day game at U.S. Cellular Field in Chicago.
19 of 29 Jonathan Daniel/Getty Images
Florida Gulf Coast alum Chris Sale got the start for the White Sox and allowed just seven hits and struck out seven while walking one in a 1-0 victory over the Royals.
20 of 29 Tom Lynn/Getty Images
Carlos Gomez is tagged out during a run down by Jhoulys Chacin of the Colorado Rockies during an Opening Day at Miller Park in Milwaukee.
21 of 29 Tom Lynn/Getty Images
Jonathan Lucroy is swarmed by teammates after his sacrifice fly in the 10th inning gave the Brewers a 5-4 win over the Rockies.
22 of 29Christian Petersen/Getty Images
The Arizona Diamondbacks line up for introductions before the Opening Day game against the St. Louis Cardinals at Chase Field in Phoenix.
23 of 29 Christian Petersen/Getty Images
Aaron Hill of the Diamondbacks hits a broken bat single in a game Arizona won 6-2.
24 of 29Ezra Shaw/Getty Images
The Oakland Athletics and the Seattle Mariners stand for the singing of the National Anthem during Opening Day at O.co Coliseum.
25 of 29 Ezra Shaw/Getty Images
Felix Hernandez struck out eight in his first start since signing a $175 million, seven-year contract in February, and the Mariners beat the reigning AL West champion Oakland Athletics 2-0.
26 of 29AP
Houston Astros fans observe Opening Day fireworks before the Astros 8-2 win over the Texas Rangers on Sunday night.
27 of 29Bob Levey/Getty Images
Nelson Cruz watches the ball leave the park on a Rick Ankiel three-run homer in the sixth inning on Opening Day at Minute Maid Park. Ankiel's home run was the finishing blow of the Astros' 8-2 win.
28 of 29 Bob Levey/Getty Images
Ian Kinsler leaps at the wall but can't make a catch on a ball hit by Justin Maxwell. It was one of two triples Maxwell had on the night.
29 of 29Bob Levey/Getty Images
Chris Carter (23), Rick Ankiel (28) and Justin Maxwell (44) of the Houston Astros celebrate after the final out against the Texas Rangers.
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