Career

He played for the Puerto Rican National Team in the 2013 World Baseball Classic. After the 2013 season, Rosario received a 50 game suspension for using a banned substance, which he served at the start of the 2014 season. The Twins promoted Rosario to the major leagues on May 4, 2015.

Rosario made his major league debut on May 6, and he hit a home run in his first at-bat, on the first pitch, off of Scott Kazmir of the Oakland Athletics.

2015

Rosario made his major league debut on May 6, 2015. Leading off the bottom of the 3rd inning, Rosario swung at the first pitch he saw from Oakland Athletics starter Scott Kazmir, and hit an opposite-field home run, becoming the 114th player in major league history to hit a home run in his first at-battalion

Rosario played in 122 games for the Twins, sharing outfield duties with Torii Hunter, Aaron Hicks, and fellow prospect Byron Buxton. Despite being called up a month in to the season, Rosario led all of baseball in triples with 15, and was second in outfield assists with 16, just one behind Avisail Garcia of the Chicago White Sox.

Rosario finished his rookie campaign with a.267 batting average and 13 home runs.

2016

With the retirement of Torii Hunter and the Twins" trade of Aaron Hicks, Rosario enters 2016 as the Twins" projected everyday left fielder.