WATCH: U.S. rugby player would be fastest in NFL and may be faster than Usain Bolt

Rugby sevens will be in the Olympics for the first time this summer, so we should probably start learning about the game and meeting some of the players.

Let's start with Carlin Isles, one of the fastest humans on the planet.

According to the USA Sevens Rugby Instagram account, Isles is faster than Usain Bolt at 20 yards and has run a 4.22 in the 40-yard dash.

To put that in perspective, the fastest 40 time ever recorded at the NFL combine was Chris Johnson's 4.24 in 2008. That means Isles would be the fastest runner in NFL history.

With players like this, USA rugby might be worth keeping an eye on later this summer.

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