「大番狂わせ(OOBAN KURUWASE)」 is a term used when the result is significantly different from the expected previous reputation, such as in sports. Introducing 「大番狂わせ」 that happened at the Olympic Games that started last week.

KIESENHOFER Anna(Austria)
The person who won the gold medal in the road race that was held the other day.
She is currently a postdoctoral fellow at the Swiss Federal Institute of Technology Lausanne.
She practiced herself and won the gold medal while doing college classes and research.
She is an amateur ranked 94th in the world. It's a wonderful achievement.
HAFNAOUI Ahmed (Tunisia)
I'm an 18 year old player. The only swimmer from Tunisia. I won the gold medal in the men's 400m swimming race!
What is amazing is the speed of its growth. His personal best before the tournament was 3: 48.68, which he had marked in 2019. In the first place, at the time of qualifying, he updated it for 3 seconds at a stretch and advanced to the final at the last minute of 8th place overall. It's only surprising to say that it eventually shortened his self-record by as much as 4 seconds 92. It's a dark horse. By the way, he set his biggest goal in his competitive life at the 2024 Paris Olympics. The result of this time is a feat that has won the gold medal more than planned(?).
The Olympic Games are still going on!
What kind of honor did the players in your country have?
Personally, I love the players from any country who can make a brilliant 大番狂わせ without losing to the strongest players.
The Olympics are still going on. Let's look forward to what kind of drama will be born.