Correa vs. Devers for the next decade makes for a good debate. Both began in the MLB at age 20, but Correa is the better player right now because of defense. Through each of their age 24 seasons, Carlos (who is two years older) has been worth more than twice the WAR of Raffy. But going forward, who has more room to grow into potentially an all-timer?
Career OPS rates so far for Correa .837 and Devers .847 are good, but not automatic Cooperstown predictors. For context, here are a couple other infielders through age 24: Miguel Cabrera had a .929 OPS, and when he reached his prime between ages 28-32, won four batting crowns with marks of .330 or higher, with an average OPS of .996; Albert Pujols didn't make the majors at age 20, but from age 21-24 he had an OPS of 1.037. In his prime years of age 28-32, he also had an OPS of .996.
Extreme cases above, but are any infielders really worthy of a 10-year deal? Lindor's career OPS through age 24 was .837... and since then, it has gone down (great fielder, though). Tatis is already playing some outfield at age 22...