EUGENE, Ore. - Whether watching from Jamaica, Japan or the United States, it was hard to miss that shock of flowing, orange hair that came streaking across the finish line first in Eugene, Ore., last Saturday night.

It belongs to Sha’Carri Richardson. And after the eye-opening show she put on at the Olympic trials — blowing away the field in the 100-meter semis in a wind-aided 10.64 seconds, then again in the final in 10.86 — she figures to grab her fair share of attention next month in Tokyo at the Summer Olympic Games.

With her performance, the 21-year-old out of Louisiana State University picked up a spot in the Olympics and a national title while also setting up a possible showdown with the Jamaican world champion, Shelly-Ann Fraser-Pryce, who is well-known for her colorful hairstyles, too.

“It’s loud and encouraging and, honestly, dangerous,” Richardson said when asked why she chose the color orange for her big night. “Knowing I’m coming to one of the biggest meets there is, if you’re going to go out there and be the best, you need to look the best.”

In addition to the long, orange hair, Richardson had the long lashes and nails to match it.

Richardson said crossing the finish line first was only the second-best feeling of the night. The best came afterward, when she climbed halfway up the stands at Hayward Field and shared a long hug with her grandmother, Betty Harp, who’s also known in the family as “Big Momma.”

“To be able to have her here at the biggest meet in my life, and to cross the finish line and run up the steps to hug her knowing I’m an Olympian, actually that’s probably better than winning the race,” Richardson said.

But that performance — it was pretty special, too. It was only after winning that Richardson said her biological mother had died a week before the race. She said she is grateful for the backing and support she gets from her family and her coach.

An over-the-limit tailwind in the semis prevented the 10.64 from becoming official and leaving Richardson only 0.01 behind Fraser-Pryce’s top time of 2021. The world record of 10.49 was set by Florence Griffith Joyner in 1988.

“Sha’Carri is such a fire- cracker,” said Richardson’s training partner, Justin Gatlin. “She’s capable of running 10.6. I’ve seen her at practice, and she’s capable of running 10.5, actually. She can definitely shock the world.”

In the final, Richardson overcame a slow start to pass her training partner Javianne Oliver, a 60-meter indoor spe- cialist who started in the lane next to her. Richardson beat Oliver by three body lengths and 0.13 seconds. Teahna Daniels finished third.

“It’s surreal to put together a full race,” Oliver said. “The 60, I had it. The last 40, I didn’t. I’ve been working on putting those two together and it came together today.”

While Richardson’s blazing speed made her close to a sure thing in the women’s 100, the men’s sprint is nowhere near as settled.

Richardson will be a first- timer at the Olympics, poised to square off with Fraser-Pryce, who has six Olympic medals, including the gold in the 100 in both 2008 and 2012. Jamaica’s Olympic qualifying is next weekend, though nobody’s doubting Fraser-Pryce — aka “The Pocket Rocket” — will skate through.

So, it could be a showdown between a 34-year-old mom and a 21-year-old up-and-comer from Dallas.

Asked about being so good, so young, Richardson sounded ready to take on the world.

“If you’ve been doing this for a long time and I step on the scene, I respect you for what you’ve done for the sport,” Richardson said. “But at the end of the day, when we get on the line, you have to do it against me.”