As the preseason winds to a close, we’re looking at the top players we’ve seen so far. That means that now we’re turning our attention to the defensive backfield. Which starters have seen enough playing time and look ready for the regular season, and which players are making a strong case for spots at the bottom of the roster as cuts loom? Here are our top-15 highest-graded defensive backs (who have played a minimum of 50 snaps) so far this preseason.