A 17-year-old Alaskan swimmer upset the favorites in the 100-meter breaststroke and shocked even herself

• 17-year-old Lydia Jacoby upset the two favorites to win the 100-meter breastroke at the Olympics.
• Jacoby looked shocked in the pool when she realized she had won.
• Jacoby is the first Olympic swimmer born in Alaska, where there is only one Olympic-sized pool.

Lydia Jacoby pulled off one of the biggest upsets so far of the Tokyo Olympics, taking home the gold medal in the women's 100-meter breaststroke.

The 17-year-old Jacoby turned on the jets in the final seconds, out-touching her teammate Lilly King and South Africa's Tatjana Schoenmaker, the two favorites in the race. Schoenmaker won silver and King won bronze.

After Jacoby touched the wall, she turned around to look at the results and looked surprised to see she had won.

Jacoby's gold is as unlikely as they come. She is from Seward, Alaska, where there isn't an Olympic pool nearby and there is only one in the entire state. NBC's Rowdy Gaines said Jacoby frequently trains in a 25-meter pool instead of an Olympic-sized 50-meter pool.

According to USA Today's Christine Brennan, Jacoby is the first Olympic swimmer from Alaska.

NBC showed a watch party in Alaska going berserk for Jacoby.

Afterward, in a post-race interview, Jacoby was essentially at a loss for words, saying she didn't know how she pulled off the win, only that she had tried to relax beforehand after stressing about it the day before.

King, who had lost in the 100-meter breastroke just once since 2015 - to Shoenmaker, in the Tokyo semis - was supportive of her teammate. She embraced Jacoby in the pool, then afterward, told NBC she was happy to see an American win it.

"We love to keep that gold in the USA family, so this kid just had the swim of her life and I am so proud to be her teammate," King said.

Watch the finish to the race below: