There are a lot of variables that will determine whether Ohio State has a successful season in 2019. 

Its unknown whether Justin Fields will be able to adjust to the learning curve in time to lead the Buckeyes to his best potential, or if the new defensive staff will translate well to the field, or if linebacker play will improve. After losing three high quality wideouts to the NFL, the bulk of the wide receivers load isn’t owned by anyone yet, and this could be the year Ohio State actually does use its tight ends more often. 

There are several other variables outside of those listed, but what do you believe is the key to Ohio State making the College Football Playoff in 2019?