Every NFL team will rely on at least two, and usually three, wide receivers each game, so logging any of the best eight performances allowed by a secondary is a significant feat. Being the top performer versus a secondary for the year is being the best of the dozens and dozens of wideouts they would have covered over 17 games.
Below will show how often a player logged the best game allowed by a secondary (WR1), one of the four-best performances allowed (top-4), and one of the eight-best performances (top-8). With 17 games played, a top-8 game is “above average” among the best wideouts from each opponent.