Baseball is a game of adjustments, especially if you’re a rookie. From facing big-league curveballs to cross-country road trips, there is plenty that is new this season for Rockies first baseman TJ Rumfield. However, in his first 39 games, Rumfield showed those adjustments are being taken in stride. Through those first 39 games entering Saturday’s contest at Philadelphia, Rumfield ranked high among all qualified MLB rookies, including tying for first in games played (39) while placing second in hits (39), fifth in RBI (21) and fourth in batting average (.271). Additionally, those 39 hits lead all Rockies and he is tied with Troy Johnston for the most multi-hit games by a Colorado batter with 10. Colorado Rockies first baseman TJ Rumfield jogs to the dugout during a baseball game against the Cincinnati Reds, Wednesday, April 29, 2026, in Cincinnati.…