Mark Daniel Trumbo[1] (born January 16, 1986) is an American former professional baseball outfielder and first baseman.

[2] Growing up, Trumbo played travel baseball against future major leaguers Phil Hughes and Brandon Barnes.

[3] At Villa Park, Trumbo was a pitcher and infielder, and was a 2005 High School All-American after hitting .425 and going 10–2 with a 2.20 ERA on the mound.

[6] He made his major league debut on September 11, 2010, as a pinch hitter for Mike Napoli and then remained in the game to play first base.

Trumbo entered the 2011 season looking for some early-season playing time at first base after a spring in which he displayed his over credited power.

On June 10, 2012, Trumbo had a career-high six RBIs on two three-run home runs in a game against the Colorado Rockies.

Trumbo was selected for the 2012 Home Run Derby by AL captain Robinson Cano, advancing to the second round before being ousted in a playoff by José Bautista.

[8] On June 3, 2015, the Diamondbacks traded Trumbo and Vidal Nuño to the Seattle Mariners for catcher Welington Castillo, reliever Dominic Leone, and prospects Gabby Guerrero and Jack Reinheimer.

He became the fifth-fastest Oriole to hit their 40th home run in a season (Chris Davis, Jim Gentile, Brady Anderson & Frank Robinson).

On September 18, Trumbo set a new career high in RBIs, with 101, by hitting his 43rd home run of the year against the Tampa Bay Rays.

Trumbo hit his league-leading 44th home run of the year on September 23 in a 3-2 walk-off victory over the Diamondbacks.

Trumbo ended the year having played in 159 games, slashing .256/.316/.533 while hitting a Major League-leading 47 home runs and driving in 108 RBIs, while seeing the lowest percentage of fastballs of all MLB hitters (47.5%).

[citation needed] Trumbo won the AL Sporting News Comeback Player of the Year Award for his accomplishments during the 2016 season.

[17] On Opening Day, Trumbo hit a walk-off home run for the Orioles, against the Blue Jays, in the eleventh inning.

After spending most of the 2019 season on the injured list following his knee surgery, Trumbo was activated off the IL on September 2, 2019.

In March 2022, Trumbo was invited by Baltimore Orioles director of administration Kevin Buck to serve as a special instructor during Spring Training.