Major League Baseball has become a young man's game in recent seasons, but the age range still spans 25 years across the sport. The following features the best player at each age from 20 to 45 at the beginning of the season.
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20: Julio Urias, P, Dodgers
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Urias had three starts this season before suffering a major shoulder injury that will sideline him for at least one year. The lefty remains one of the most promising young pitchers in the game.
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21: Cody Bellinger, 1B/OF, Dodgers
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Bellinger turned 22 on July 13, but he's had quite a year playing most of his rookie season as a 21-year-old. He's well on his way to NL Rookie of the Year with a league-leading 26 home runs and a .980 OPS in only 73 games.
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22: Carlos Correa, SS, Astros
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Correa would be getting far more consideration for AL MVP if not for Aaron Judge's great first half. The shortstop is hitting .320-20-67 and already has 62 home runs in his career.
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23: Corey Seager, SS, Dodgers
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Seager is trying to top off his great 2016 Rookie of the Year campaign. So far, so good. He's hitting .296-14-46 in the middle of the Dodgers' batting order.
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24: Bryce Harper, RF, Nationals
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Harper leads a talented crop of 24-year-olds that includes Mookie Betts, Jose Ramirez and Xander Bogaerts. The 2015 NL MVP has rebounded this season to hit .329-23-72 in 85 games for the National League's best lineup.
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25: Mike Trout, CF, Angels
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While Aaron Judge is likely to edge Trout in AL MVP consideration this season, Trout's track record gives him the nod as the best 25-year-old in baseball. The three-time MVP is hitting .337-16-36 with 11 steals and a 1.171 OPS in 50 games, missing more than a month with a thumb injury.
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26: Nolan Arenado, 3B, Rockies
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Arenado has won four consecutive Gold Gloves at third base and also leads the NL in RBI for the third straight season. He's hitting .301-18-73 in 93 games for the Rockies.
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27: Jose Altuve, 2B, Astros
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Alongside Carlos Correa, Altuve completes the best middle infield in the game. He made his fourth consecutive All-Star appearances this year and is on pace to win his third batting title in four seasons. Altuve is hitting .347-14-51 with 19 stolen bases.
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28: Chris Sale, SP, Red Sox
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Sale has emerged as the ace of the Boston staff and is well on his way to his first Cy Young Award. He leads the AL in ERA (2.59), innings (135.1) and strikeouts (191).
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29: Clayton Kershaw, SP, Dodgers
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Kershaw tops Diamondbacks star first baseman Paul Goldschmidt by a hair. The three-time Cy Young winner and 2014 NL MVP is in contention for another Cy Young Award this season. He's 14-2 with a 2.18 ERA and 159 strikeouts in 132.1 innings.
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30: Buster Posey, C, Giants
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The Giants have struggled this season, but that hasn't been Posey's fault. The 2012 NL MVP has a .911 OPS, his best since that 2012 season, hitting .326-11-37 in 81 games.
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31: Corey Kluber, SP, Indians
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The 2014 AL Cy Young winner, Kluber is having another fantastic year for Cleveland. He's 7-3 with a 2.86 ERA and 135 strikeouts in only 100.2 innings.
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32: Max Scherzer, SP, Dodgers
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Scherzer won his second Cy Young Award last season, and he could be looking at his third this year. He's 11-5 with a 2.01 ERA and 183 strikeouts in 134.1 innings.
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33: Joey Votto, 1B, Reds
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An on-base machine, Votto is tied for the NL lead in home runs with 26. He made his fifth All-Star appearance this year and has a staggering 1.036 OPS for the Reds.
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34: Robinson Cano, 2B, Mariners
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Cano has yet to show signs of age at the plate. After hitting a career-high 39 home runs last season, Cano is hitting .268-18-63 with a strong .802 OPS this season.
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35: Ian Kinsler, 2B, Tigers
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Kinsler's bat has really slipped this season at age 35, but he's still played strong defense after winning his first Gold Glove last year. He's hitting .242-9-24 with 52 runs scored in 74 games.
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36: Nelson Cruz, DH, Mariners
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Cruz's power simply can't be stopped. He could have a tough time reaching 40-plus home runs for the fourth straight year, but Cruz leads the AL with 74 RBI and is hitting .292 with 20 home runs and a .914 OPS. He did turn 37 this month.
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37: Rich Hill, SP, Dodgers
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After struggles with blisters and his control early this season, Hill has come around for the Dodgers. He has a 3.55 ERA in 13 starts after posting a 2.12 ERA in 20 starts between Oakland and L.A. last year.
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38: Adrian Beltre, 3B, Rangers
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Almost assuredly a future Hall of Famer, Beltre has rebounded from an early-season injury to hit .282-8-30 in 39 games. He's signed through next season.
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39: Joaquin Benoit, RP, Phillies
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Benoit has struggled with his control again this season, but he has has a 4.42 ERA and nearly one strikeout per inning.
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40: Fernando Rodney, RP, Diamondbacks
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Rodney has held on to the Arizona closer job despite struggling for much of the year. He has a 5.58 ERA but has converted 22 saves.
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42: R.A. Dickey, SP, Braves
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Dickey continues to throw his knuckleball effectively with a 4.08 ERA in 18 starts. The 2012 NL Cy Young winner had a late-career breakout at age 35 in 2010.
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43: Ichiro Suzuki, OF, Marlins
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Ichiro is capping off his Hall of Fame career as a bench player in Miami for the third straight year. He's had only 112 at-bats, hitting just .223 with no steals in what's probably the final season of his MLB career.
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44: Bartolo Colon, SP, Twins
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Colon completely failed with Atlanta after signing a one-year, $12.5 million contract, posting an 8.14 ERA in 13 starts 20 years after his 1997 debut. The Twins still added Colon on a minor league deal and have inserted him into their starting rotation.