As the NFL offseason progresses, fans continue to learn little tidbits of information about the inner workings of a professional franchise.

According to ESPN, 14 teams (including the Rams) in the NFL were Catapult Sports clients in 2014. The company embeds GPS machines in jerseys to compile data on athletic exertion.

New York Daily News reported in May 2016 that the Rams used Zebra Technologies’ radio-frequency identification (RFID) technology. In the recent MMQB feature on Rams coach Sean McVay, it appears the team is still using similar technology.

McVay asked his trainer which players have collected the most yardage during optional team activity practices (via MMQB):

Now it’s Rams head trainer Reggie Scott who drops by. He has injury updates. McVay asks him which player so far has run the most total yards in OTAs. (The Rams track this data with a GPS program.) McVay guesses wide receiver Mike Thomas, and he’s correct. (Naturally; wide receivers run farther downfield on each snap than any other player, plus they must jog to and from the huddle.)

The Rams coach also guessed Todd Gurley would be near the top because he recalls the running back often running through the whistle. Scott informs him Gurley is in the top third.

While many other teams likely use similar technology, it’s still interesting to learn more about how the Rams study their personnel.