Christian Coleman is the 21-year-old US sprinter who beat Usain Bolt

This is a photo of sprinter Christian Coleman.

Christian Coleman came second in the men's 100m final at the World Athletics Championships, but what else is there to know about the 21-year-old athlete?

You'd be excused for not having heard of the sprinter before Friday.

Crossing the finish line after Justin Gatlin and just 0.1 seconds before Usain Bolt in London - together team USA handed the Jamaican superstar his first loss since 2013.

Here are a few things you should know about Christian Coleman.

He only turned pro in June

The 21-year-old's athletics career has gone from strength to strength during his time as a college sprinter at the University of Tennessee.

But now he's skipping his senior season and turning professional.

In June, he reportedly landed a seven figure deal with Nike after winning indoor 60m and 200m and the outdoor 100m and 200m races, making him the first man to win those four titles in one school year since Justin Gatlin.

"I'm still in college so I'm used to living off nothing, I haven't even thought about what I'll do with the money yet," he told journalists earlier this summer.

This is a photo of Christian Coleman, Justin Gatlin and Usain Bolt during their medal ceremony.

He's now the fastest man in the world

Yes, despite the seemingly shocking result in Friday's final, Christian Coleman has officially been the fastest man in the world since June.

The 21-year-old turned professional after clocking 9.82 in the 100 meters at the NCAA Track and Field Championships in Eugene, Oregon.

So although he didn't set a new record in London or even come close to his current one - it's not the first time he's pipped Usain Bolt to the post.

This is a photo of Christian Coleman and Usain Bolt racing side by side in the 100m finals.

He's crossed over into NFL territory

With his speed, it seems like the student majoring in sport management could have had a career in the NFL.

Before his career as a sprinter took off - he was an all-state defensive back and wide receiver for his high school in Atlanta, Georgia.

And back in May, Christian went viral for running a 40 yard sprint in 4.12 seconds, setting a new record.

Known as the 40 yard dash, the distance is used as a standard measure of speed for American football players during the NFL draft season

He has a tattoo of the Olympic rings

Athletics has made a permanent mark on the young sprinter - so much so that he's got the Olympic rings tattooed on the inside of his arm.

This is a photo of athlete Christian Coleman holding up the American flag.

He first competed outside the US at the Rio 2016 Olympics, running the first leg in the men's 4x100m relay qualifying heat.

"Everybody there was at the top of their game. And being in that type of atmosphere made me want to raise my level of competitiveness," he said in an interview at the time.

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