A 19-year-old star has secured the biggest win of her young career by ousting the number one seed at the WTA 250 Tenerife Ladies Open.

World number 63 Maria Camila Osorio Serrano rallied from a set down to win over world number six Elina Svitolina.

“It was an incredible match,” the Colombian said following the victory. “I still can’t believe I won.

“[Svitolina] is a fighter, she is so good. She’s a really great tennis player and I knew it was going to be hard. But yeah, I’m super happy with this win and I just need to focus on the next one now.”

After the match started on Tuesday, play was suspended due to light at the end of the first set, Svitolina taking it 7-5.

Serrano proceeded to win the next two sets 6-3, 6-2 when play resumed Wednesday, claiming her first ever win over a top-10 opponent. She proceeded to cry in disbelief that she had won the match.

Biggest win of her career ✨

🇨🇴 @CamiOsorioTenis takes out the No.1 seed Svitolina and secures her first top 10 win!#TenerifeLadiesOpen pic.twitter.com/fYYoRRkZTb

— wta (@WTA) October 20, 2021

Back in April, Serrano won her maiden WTA title at the Copa Colsanitas in her native Colombia. She defeated Roland Garros semi-finalist Tamara Zidansek in the final there.

“I was playing well on clay and also grass [this season]. I wasn’t doing too well on hard so that’s why I’m a little surprised after this victory.

“But, yes this year has been unbelievable for me. It’s my first year as a professional. So, I’m super happy and excited that all the work that I’ve been doing is paying off.”

Serrano now has a 32-16 win-loss record on the WTA tour in 2021. She came through qualifying at both Roland Garros and Wimbledon before appearing in the US Open main draw as a direct entrant. Her current ranking of 63 in the world is a career-high.