Following a diagnosis of left knee tendinitis, Los Angeles Rams running back Todd Gurley is taking his rehabilitation slowly — as he should be. But, he can still run fast.

Thanks to GPS sensors players wear on the field, the Rams are able to track their players' performance in a closer way. What they saw in Gurley's tests was a back that can still run laps around defenders.

In a recent interview with NBC Sports' Peter King, via Rams Wire, Rams head coach Sean McVay noted that Gurley is doing well and as fast as ever.

“When you look at the way that we monitor these guys with the GPS and the tracking system, he’s hitting speeds that are as high as he’s ever hit before. So you can see the guy’s strong. He hit 21 miles an hour running yesterday at practice and I think he’s feeling good.”

Gurley didn't hit 21 mph in 2018. However, he did hit 19.78 mph on a five-yard run in Super Bowl 53, the fastest time of the game, according to NFL Next Gen Stats. In 2017, he recorded 21.23 mph on an 80-yard touchdown catch.

Many eyes are on Gurley to bounce back from the diagnosis and a playoff run in which he didn't look like himself. Though he doesn't need surgery, tendonitis is something worth worrying about considering it can cause long-term effects.

But, if Gurley is running at the same pace as he did in his 2017 Offensive Player of the Year campaign, he may be just fine. Unfortunately, he won't play against the Dallas Cowboys on Saturday in Honolulu, Hawaii.