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.
Ken Griffey Jr.
In 1999, he ranked 93rd on "The Sporting News"' list of the 100 Greatest Baseball Players. This list was compiled during the 1998 season, counting only statistics through 1997. At age 29 (going on 30), he was the youngest player on the list. That same year, Griffey was elected to the Major League Baseball All-Century Team. However, when "TSN" updated their list for a new book in 2005, despite having surpassed 400 and 500 home runs, Griffey remained at Number 93.