3) Troy Tulowitzki’s 2010 season (Age 25 season)
In 2010, his last season of eligibility for this list, Tulo played in 122 games, hit 27 home runs, had 95 RBI, hit .315/.381/.568, had 32 doubles, 148 hits, an OPS+ of 138, and 19 DRS.
Despite only playing 122 games, he was an All-Star, came 5th in NL MVP voting, won a Gold Glove, and a Silver Slugger Award, and had a WAR of 6.7, which was the second-highest number in his tenure as a Rockie.
2) Troy Tulowitzki’s 2007 season (Age 22 season)
Tulowitzki had a cup of coffee in the majors in 2006 (25 games) but still qualified as a rookie in 2007 and had a fantastic season.
In 155 games, he scored 104 runs, had 177 hits, including 33 doubles, 24 home runs, 99 RBI, a .291/.359/.479 slash line, and a 109 OPS+. Those offensive numbers (particularly the OPS+) but his 34 DRS is what puts this season over the top of any other season by him.
His WAR was 6.8, which was the highest for him as a Rockie, the highest by a Rockies offensive player aged 25 or under, and the 7th-highest among any Rockies offensive player (Larry Walker, Ellis Burks, and Todd Helton have the six spots ahead of Tulo’s 2007 season).
Not a bad season to start your career. Come in second in NL Rookie of the Year voting, go to the World Series, and rank in MVP voting, all while you’re 22 years (he turned 23 during the 2007 playoffs).
But there’s one more season that tops them all for Rockies aged 25 or under.