When Adam Duvall first came over to the Cincinnati Reds from the San Francisco Giants in the Mike Leake deal, Duvall most closely projected to have a career similar to that of former New York Yankee Kevin Maas. Duvall had plus power and on-base skill, but lacked the ability to hit for average consistently. Since his arrival in Cincinnati, Duvall has been burning his time until he either hits the Maas limit or breaks through.
Maas was a slugger for the Yankees in the early 1990s who came up, had a great two years and then faded away.