A 15-year-old girl, Ruta Meilutyte, won Lithuania first swimming medal Monday by taking gold in the 100-meter breaststroke.
She beat the American Rachael Soni, who took the silver, by 0.08 seconds. Japanese swimmer Satomi Suzuki came in third place, earning her a bronze medal, while Australia's defending champion in the event, Leisel Jones, finished in fifth place.
Other Lithuanians have competed and won in the Olympics when their country was under Soviet rule, bu Meilutyte is the first to win a swimming medal under the Lithuanian flag, Swimming World magazine reported.
The results were:
1 Meilutyte, 1:05.47
2 Soni, 1:05.55
3 Suzuki, 1:06.46
"I didn't expect it at all, I am in shock," an emotional Meilutyte told Swimming World. "I am speechless."
"I can't believe it," Meilutyte told BBC Sport. "It's too much for me."
See pictures of Ruta Meilutyte's reaction to winning gold for the 100-meter women's breaststroke here.
Taking first place after swimming 100 meters in 1:05.47 puts Meilutyte in eighth place of the event's all-time rankings, Swimming World said.
The race began with a glitch, according to the Telegraph, when the starter's gun went off before "on your marks" was called.
Meilutyte was still able to get off the block the fastest, was ahead in the turn, the Telegraph said. She and Soni were extremely close in their final strokes, but it was Meilutyte who placed her hands on the wall first.
"@MeilutyteRuta well done!!!!! Awesome!!! Proud to go to the same school as you!!!! @PlymouthColleg1," fellow Olympic athlete, British diver Tom Daley, tweeted out to his schoolmate.
Meilutyte has not tweeted for the past few days, but describes herself on her Twitter page as, "15, International Lithuanian swimmer, Lithuanian youth/senior record holder and will be competing at London2012 Olympics!!"
Next time she logs on she can add Olympic gold medalist to her description.