Keller has accomplished a lot since being selected seventh overall in the 2016 draft. He ascended from the USHL all the way to the NHL in less than a calendar year with dominant stops at Boston University, the World Junior Championship and the World Championship. He projects to slide into an offensively tilted role with Arizona in his first full season in the league, and Keller owns the skill set and creativity to be a consistent scorer out of the gate. However, at just 5-foot-10 and 168 pounds, there will likely be plenty of offensive peaks and valleys throughout the season. Additionally, the rigors of an 82-game schedule could take its toll in the second half. Still, Keller's an elite talent with promising long-term upside.