The new-look Seattle Mariners with $240 million second baseman Robinson Cano defeated their AL West rival Los Angeles Angels 10-3 on Opening Day.

The game started well for the Angels when superstar Mike Trout hit a two-run home run in his first at-bat of the season to put the Angels up 2-1. The Angels held a 3-1 lead into the six when the Mariners scored nine unanswered runs in the final three frames.

The Cleveland Indians defeated the Oakland Athletics 2-0 on Opening Day.

The game remained scoreless into the top of the ninth inning when Nyjer Morgan hit a sacrifice fly to make it 1-0.  Indians outfielder Nick Swisher then hit a broken-bat single, scoring Morgan to give the Indians the 2-0 edge.

The San Francisco Giants defeated their NL West rival Arizona Diamondbacks 9-8 on Opening Day.

With the game tied 7-7 in the top of the ninth inning, 2012 National League MVP Buster Posey broke the tie with a two-run home run and then celebrated with teammate Brandon Belt.

The Miami Marlins defeated the Colorado Rockies 10-1 on Opening Day.

Marcell Ozuna celebrates a home run with teammate Jose Fernandez (bottom).

The Tampa Bay Rays defeated their AL East rival Toronto Blue Jays 9-2 on Opening Day.

In the fifth inning, Rays outfielder Desmond Jennings elludes a tag from Blue Jays catcher Josh Thole and scores off a double from teammate Matt Joyce.

The defending National League Champion St. Louis Cardinals took the road and defeated their NL Central rival Cincinnati Reds 1-0 on Opening Day.

Cardinals closer Trevor Rosenthal earned his first save of the season and immediately celebrated the victory with teammate Matt Holliday (back).

The Chicago White Sox defeated their AL Central rival Minnesota Twins 5-3 on Opening Day.

Outfielder Adam Eaton (left) and shortstop Alexei Ramirez (right) celebrate after the team's win.

The Baltimore Orioles defeated their AL East rival and defending World Champion Boston Red Sox 2-1 on Opening Day.

The Orioles most recent big-name acquisition Nelson Cruz hit the go-ahead home run in the bottom of the seventh inning off Red Sox starter Jon Lester. Cruz received a pie in the face from teammate Adam Jones after the game.

The Texas Rangers opened their season on March 31 with a 14-10 loss to the Philadelphia Phillies.

Cody Asche (25) of the Phillies celebrates a run with Jimmy Rollins (11) against the Rangers in the 5th inning.

The New York Mets opened their season against the Washington Nationals on March 31. The Nationals defeated the Mets in the 10th inning 9-7.

Juan Lagares of the Mets celebrates his solo home run as catcher Wilson Ramos of the Nationals looks on in the eighth inning.

The Milwaukee Brewers opened their season with a 2-0 win against the Atlanta Braves on March 31.

Carlos Gomez of the Brewers is tagged out running to third base in the bottom of the first inning.

The Pittsburgh Pirates opened their season against the Chicago Cubs on March 31. The Pirates won 1-0 in the bottom of the 10th with a home run from Neil Walker.

Francisco Liriano of the Pirates pitches in the first inning against the Cubs.

The Detriot Tigers opened this season on March 31 against the Kansas City Royals with a 4-3 win. The Tigers scored their winning run in the bottom of the 9th.

Victor Martinez of the Tigers celebrates after hitting a solo home run during the second inning.

The San Diego Padres opened their season with a win on March 30 against the Los Angeles Dodgers.

Everth Cabrera (2) of the San Diego Padres celebrates with Yasmani Grandal (8) after scoring during the eighth inning.