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.
Clayton Kershaw
Kershaw was drafted seventh overall in the 2006 MLB draft. He worked his way through the Dodgers' farm system in just one full season, and reached the majors at 20 years old. When he debuted in 2008, he was the youngest player in MLB, a title he held for one full year. In 2011, he won the pitching Triple Crown and the National League Cy Young Award, becoming the youngest pitcher to accomplish either of these feats since Dwight Gooden in 1985. During the 2013 off-season, the Dodgers signed Kershaw to a franchise record seven-year, $215 million contract extension. Kershaw pitched a no-hitter on June 18, 2014, becoming the 22nd Dodger to do so. Being a left-handed strikeout pitcher and playing for the Los Angeles Dodgers, Kershaw has often been compared to Hall of Fame pitcher Sandy Koufax. He became the first pitcher in history to lead MLB in ERA for four consecutive years when he did so in the 2011 through 2014 seasons.