Strong defensive lines have typically been the backbone of elite units, but a top-level secondary can drive success in modern college football.
Looking ahead to the 2021 season, about half of the 10 Football Bowl Subdivision conferences have a clear-cut No. 1 defensive backfield. The other leagues have a couple of options that appear poised to emerge as the peskiest pass defense in the conference.
The regular season will certainly tell a different story in some places. However, making these projections is a chance to lay out offseason perceptions and hold ourselves accountable in the fall.
While the choices are subjective, they're based on returning production, past performance and future projection.