The NBA has been blessed with some spectacular athletes over the years, but none of them jump quite like Keon Johnson.

The Tennessee guard, considered a potential top-10 pick, made NBA history more than a month before the draft on Wednesday when he recorded a 48-inch max vertical jump at the NBA scouting combine. That leap is the highest the event has ever seen by 2.5 inches, exceeding Kansas' Kenny Gregory's 45.5 inches set in 2001.

Here's how it looked:

To give you some perspective on how ludicrous a 48-inch (literally four feet!) vertical jump is, consider that Johnson is 6-foot-5 (77 inches), which adds up to 125 inches. That means Johnson can jump to the point that the top of his head is five inches over the basket, to say nothing of his 6-foot-7 wingspan.

Johnson also impressed in the standing vertical jump, posting a mark of 41.5 inches.

If you didn't watch much Tennessee basketball last year, just know that this trait of Johnson's very much shows up on his tape:

Yahoo Sports' Krysten Peek currently has Johnson going eighth overall to the Orlando Magic in her post-lottery mock draft. She not only praises his obvious athleticism, but also says he has an elite basketball IQ plus a compares him to Utah Jazz star Donovan Mitchell.

In one season at Tennessee, the 19-year-old Johnson averaged 11.3 points, 3.5 rebounds and 2.5 assists while shooting 44.9% from the field. He was second in both points and assists on an 18-9 Volunteers team that finished fourth in the SEC but saw its season end early with a first-round upset loss in the NCAA tournament.

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