Mike Trout
On April 17, 2015, Trout became the youngest player in MLB history to reach 100 home runs and 100 stolen bases. He was 23 years and 253 days old when he reached the milestone, passing the previous record-holder, Alex Rodriguez, who had achieved it at the age of 23 years and 309 days in 1999. Trout led off the 2015 MLB All-Star Game with a home run, becoming the fourth player in All-Star Game history to do so. For the second year in a row, Trout won the All-Star Game MVP Award, becoming the first player ever to win it in consecutive years. On September 22, Trout hit his 40th home run, becoming only the second Angels player to hit 40 home runs in a season. Trout led the AL in WAR for the fourth straight year.
Aaron Judge
Batting .277 with 25 home runs and 58 RBIs, Judge was named a starting outfielder for the 2018 Major League Baseball All-Star Game. 
Judge became the fifth player in Yankees history to start an All-Star Game in each of his first two seasons. The other players before him were: Babe Ruth, Lou Gehrig, Joe DiMaggio, and Lefty Gomez. With his solo home run in the 2nd inning, Judge also became the youngest Yankees player to hit a home run in the All-Star Game since Mickey Mantle in 1956.