Earlier this week, I pointed out that San Francisco 49ers wide receiver Quinton Patton ranked fourth among No. 3 receivers in a new stat that measured separation a receiver gets. In a follow-up to that, the same stat ranks Jeremy Kerley fourth among slot receivers. Here’s how NFL.com describes the stat:

The separation stat comes from the sensors measuring, “how much separation a receiver earned from the defender covering them when their quarterback threw them the ball.” It is probably not a perfect piece of information, but it is one more tool to add to our tool box in figuring out what players are doing on the field at any given moment.

The 49ers acquired Kerley in a trade with the Detroit Lions after Bruce Ellington suffered a season-ending hamstring injury. They sent Brandon Thomas to the Lions in the deal, and it turned out to be one of the most productive trades in recent memory. Thomas was waived a few days later, while Kerley finished the season with 64 receptions for 667 yards and three touchdowns. He also ranked No. 17 in the NFL in average punt return at 7.5 yards.

Here is what NFL.com had to say about Kerley’s performance this season. He hits free agency in March.