Corbin Carroll is off to a hot start to his rookie season. In his first 54 games, he’s batting .287 with nine home runs, 16 stolen bases, and an .888 OPS. Baseball Reference sums up his entire output this season to be worth 2.1 Wins Above Replacement (WAR). His contributions are a big reason why Arizona enters play today with the best record in the National League at 34-23. It can be tough to project how a player finishes their rookie season, some players will hit a proverbial rookie wall and others will smash through it. If we extrapolate his…