From 2019-20, 36 defensive backs in the NFL logged at least 300 snaps in slot coverage. The best of that bunch in terms of the fewest yards allowed per snap? That would be Brian Poole, who allowed 472 yards on throws in his direction across 629 snaps in slot coverage, a stingy average of 0.75 yards per cover snap that topped the 36-player group by a wide margin.
Overall, when we compare Poole’s numbers against all qualified cornerbacks over the past two seasons, and we include all of his coverage snaps (both in the slot and outside), he stands out as one of the toughest corners to beat in football.