Nolan McLean holds the narrowest edge in the NL Rookie of the Year market thanks to his early command and strikeout totals as the Mets’ starter, while Sal Stewart, Konnor Griffin, and JJ Wetherholt sit within a few percentage points on the strength of their contact, speed, and on-base production. Stewart’s power surge in Cincinnati and Wetherholt’s league-leading OBP and defensive range for St. Louis keep the race fluid, with Griffin’s stolen-base pace adding another dimension for Pittsburgh. These tightly bunched odds reflect the absence of a single dominant story after one month, as each contender’s trajectory hinges on sustained health, playing time, and how quickly their advanced metrics separate them from the pack heading into the summer.