After Mike Trout homered in the season’s first inning for the second consecutive year, Felix Hernandez struck out 10 to lead the Mariners to a 4-1 victory over the Angels at Safeco Field on Monday afternoon. Seth Smith tallied three extra-base hits and two RBIs for Seattle.

For the second straight year, an injury struck the back end of the Mets’ bullpen on Opening Day. This time it was right-handed closer Jenrry Mejia, who felt stiffness in his right elbow while warming up for a save attempt during Monday’s 3-1 win over the Nationals.

Leave it to Jose Altuve to get the Astros going in their first game of the season. Altuve, who led the Major Leagues last year in batting average and hits, stroked a two-out bloop single to center field with two outs in the sixth inning off Indians ace Corey Kluber, stole second and scored on a single by George Springer to give the Astros the only run they’d need in a 2-0 win over the Indians at Minute Maid Park on Monday night.

Mets right-hander Bartolo Colon spoiled the party for the Nationals on Opening Day at Nationals Park. He dominated for six innings on Monday and helped New York earn a 3-1 win despite an impressive Washington debut by Max Scherzer.

The Marlins are best left to chalk up a 2-1 loss to the Braves on Monday as a case of first-day jitters. But on the whole, one game certainly doesn’t cloud our overall perception of what this club can be in 2015.

New shortstop Jimmy Rollins’ three-run homer off Shawn Kelley with one out in the bottom of the eighth inning on Monday powered the Dodgers to a 6-3 Opening Day comeback win over the Padres, who were led by former Dodger Matt Kemp’s three RBIs.

The way the Royals started their season on Monday showed they maintain a confidence that comes with being the defending American League champs.

Mike Trout began the 2015 season the same way he started it in ’14 — with a home run against King Felix. He is the first Angels player with consecutive homers on Opening Day since Jeff Mathis from 2010-11.

After a perfect Opening Day on the field, the Red Sox had a strong one off of it as well, announcing the signing of right-hander Rick Porcello to a four-year contract extension.

The Red Sox looked just fine without Cole Hamels in their rotation Monday in a convincing 8-0 victory over the Phillies at Citizens Bank Park.

The Mariners have marquis attractions in Felix Hernandez, Robinson Cano and Nelson Cruz. There is also depth, and that, as much as the superstars, is why the Mariners have become more than a trendy pick to click in the American League West.

Mike Moustakas and Alex Rios homered to back Yordano Ventura in the Royals’ 10-1 Opening Day win over Jeff Samardzija and the White Sox at Kauffman Stadium.

David Price heard from teammates that Opening Day was like a holiday in Detroit. His 8 2/3 scoreless innings, helped by some heroics from his Tigers teammates, turned Monday afternoon’s season opener at Comerica Park into an event in a 4-0 win over the Twins in Paul Molitor’s managerial debut.

The Tigers hit the first two home runs of the Major League season Monday afternoon. Detroit left fielder Yoenis Cespedes became the first to take one back, reaching over Comerica Park’s left-field fence to rob the Twins’ Kurt Suzuki in the third inning.

After so much Spring Training talk about his troublesome thumb, it was a strained rib cage muscle that knocked Ryan Braun out of the Brewers’ Opening Day loss to the Rockies.

Masahiro Tanaka seems to understand that a subpar outing on Opening Day plays much bigger than any single loss in June or July, but when coupled with the doomsday watch that promises to accompany his right elbow throughout the year, any such stumble is set to be magnified all that much more.

Major League Baseball Commissioner Rob Manfred announced on Monday that the Nationals have been awarded the 2018 All-Star Game at Nationals Park.