U.S. Olympic Track and Field Trials Day 2: Sha'Carri Richardson wins women's 100m, books spot at Tokyo; Allyson Felix advances to 400m final

Sha'Carri Richardson is headed to the Olympic Games Tokyo 2020.

The American sprinter, just 21 years old, was lightning fast in the women's 100m final on Saturday night at the U.S. Olympic Team Trials for track and field, securing her spot at a first Olympics.

"It's a dream since I've been young," Richardson said on NBC. "Being happy is an understatement. All of those feelings in one."

Richardon ran a 10.86 to capture the final, with Javianne Oliver and Teahna Daniels finishing 2-3 in 10.99 and 11.03, respectively. Oliver and Daniels will represent the U.S. in Tokyo, as well.

The men jumpstarted their 100m event on Saturday, as well, with favoured Trayvon Brommell clocking a 9.84 into the semi-finals, the top time.

Veteran Justin Gatlin, the 100m champion at Athens 2004 (who also won silver in 2016 and bronze in 2012) is through to the semis, as well, with a 9.88 at age 39. Noah Lyles, who is favoured in the 200m, ran a 9.95, sixth among the 16 semi-finalists.

In the women's 400m semi-finals, Allyson Felix advanced to the final with a 51.01, second in her heat behind Kendall Ellis.

"I feel really prepared for this moment," Felix said. "I'm trying to take it all in and have some fun as well. I want to run these rounds smart. I'm going to lay it all out there tomorrow."

In the only other final of the day aside from the women's 100m, Valarie Allman won the discus to book her spot in Tokyo, while Rachel Dincoff did the same - on her final throw.

READ MORE: Ryan Crouser sets world record on Day 1 | Day 2 preview | Meet Michael Norman

Richardson rolls - Sha'Carri delivers in the moment

From start to finish - in three races - it was Richardson who dominated the women's 100m event, capturing her prelim, semi-final and final in blistering fashion. She pointed to the race clock in her semi-final to highlight her time, then promised she would keep her foot on the gas in the final, which she did.

But in none of her races was she the fastest starter, and that included the final, Richardson catching her highest speeds mid-race and then pulling away from the pack. She was comfortably ahead of Oliver and Daniels across the finish line.

It was then that she ran up into the stands, finding her grandmother, who she embraced with a hug.

"She's always been right there," Richardson said. "My grandmother is my superwoman. To have her here at the biggest meet of my life... it felt amazing."

Women's discus - Allman gets Olympic ticket five years after disappointment

For Allman, who watched the movie "Miracle" as a kid and dreamed about going to the Olympics herself, her win in the women's discus comes five years after just missing out on a spot in Rio at the Trials.

"It's impossible not reflecting on 2016 and what that experience was like," the 26-year-old Stanford alum said. "It was in that moment that I realized that I wanted to do it again. To be here five years later, it's the best feeling. I feel like I'm on cloud nine."

Allman won with a 69.92m throw (229 feet 5 inches), while Dincoff saved her best effort for last, launching a 60.21m (197 feet 6 inches) to secure her spot. Micaela Hazlewood had been second (62.54m), but had not registered an Olympic qualifying throw prior to or at Trials, meaning Dincoff will go to Tokyo.

Said Allman about being an Olympian: "There is something special about patriotism and the team environment and taking on the big dogs. In 2016, I was so close... to see something and not achieve it, that really motivated me. The last five years have been so challenging. I can't wait for Tokyo."

Day 2 - Harper-Nelson, Brazier, Norman and more

Day 2 was a busy one at Hayward Field in Eugene, Ore., with other action including the preliminary rounds of the men's pole vault, women's 100m hurdles, and men's triple jump, as well as the semi-finals for the men's 400m and 800m, and the women's 1500m.

In the aforementioned women's 400m semis, Quanera Hayes had the best qualifying time for the final, clocking a 50.07.

Here's what else shook out:

• Women's 100m hurdles prelims: Dawn Harper-Nelson, 37, Beijing 2008 gold and London 2012 silver medallist in the 100m hurdles, did not advance out of the first round of that event, finishing outside the top 16.
• World record holder Keni Harrison was the fastest in the four heats, going 12.49.
• Rio 2016 champion Brianna McNeal, competing under a temporary stay for a suspension being appealed to Court of Arbitration for Sport, was right behind Harrison's time, coming in at 12.50.
• Olympic bronze medallist Sam Kendricks moved on in the men's pole vault prelims.
• In the absence of Olympic champ Christian Taylor - out due to injury - Will Claye leads the men's triple jump with a 16.85m leap.
• Olympic bronze medallist Jenny Simpson is into the women's 1500m final, while Nikki Hiltz had the fastest time at 4:05.87.
• World champion Donovan Brazier and Olympic bronze medallist Bryce Hoppel advanced to the final of the men's 800m.
• And Michael Norman, favoured in the men's 400m, is into the final, with the second-fastest time in the semis behind Michael Cherry (44.50 to 44.73).