Carroll will be on the Diamondbacks' taxi squad, Zach Buchanan of The Athletic reports. As one of the team's top prospects, it's not surprising that Carroll will be on the taxi squad. However, he has not even played at Low-A yet, so he likely won't get much work in the majors in 2020.
Carroll slashed .299/.409/.487 with 18 stolen bases over 42 games in the rookie-level Arizona League and short-season Hillsboro in 2019. Carroll fell to 16th in the first round of the 2019 draft amid concerns about his size, but the 5-foot-10, 165-pounder looked like a bargain for the Diamondbacks. He produced even better after his promotion to Hillsboro, for whom he helped win the Northwest League championship, slashing .326/.408/.581 over 11 games.
Carroll will make his professional debut for the Diamondbacks' entry in the Arizona Rookie League on Saturday, Nick Piecoro of the Arizona Republic reports. The 5-foot-10 Carroll showed off his hitting chops at Chase Field on Friday, spraying balls to all fields while showing off surprising power for an 18-year-old. The thinking on undersized players has changed "significantly" over the years, according to Diamondbacks general manager Mike Hazen, who feels Dustin Pedroia may have had something to do with it. "The way he came out right away and hit for power, along with the 'hittability' and the approach," he said. "I'm sure he was one of the guys who sort of changed the narrative on that." Arizona assistant general manager Amiel Sawdaye, who scouted Mookie Betts while with Boston, feels smaller players with shorter arms produce shorter, compact and lower-maintenance swings, allowing them to manipulate the barrel to the ball more effectively.