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.
Greg Maddux
Maddux was drafted in the second round of the 1984 Major League Baseball draft by the Cubs, and made his major league debut on September 3, 1986, the conclusion of the September 2nd game which had been postponed due to darkness (lights were not installed at Wrigley Field until 1988). At the time, Maddux was the youngest player in the majors. His first appearance in a major league game was as a pinch runner (for catcher Jody Davis) in the 17th inning against the Houston Astros. Maddux then pitched in the 18th inning, allowing a home run to Billy Hatcher and taking the loss. His first start, five days later, was a complete game win. In his fifth and final start of 1986, Maddux defeated his older brother, who was pitching for the Philadelphia Phillies, marking the first time rookie brothers had pitched against each other. Mike Maddux was well used to his younger brother's competitive spirit, saying of their youth, "If Greg couldn't win, he didn't want to play, plain and simple."