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.
Kid Nichols
Nichols played minor league baseball for three teams until September 1889, when he signed for the Boston Beaneaters. After making his debut the following season and spending twelve seasons with the Beaneaters, Nichols spent a two-year sojourn in the minor leagues. He was dealt to the St. Louis Cardinals in 1904 and subsequently played for the Philadelphia Phillies, with whom he played his final game on May 18, 1906. He is most famous for being the youngest pitcher to join the 300 win club.