Nikola Ćaćić

Nikola Ćaćić (Никола Ћаћић, ; born 7 December 1990) is a Serbian professional tennis player. He has a career-high ranking of World No. 35 in doubles achieved on 8 November 2021. He has won three doubles titles in the ATP Tour, four doubles titles in the ATP Challenger Tour, and five singles and 32 doubles titles in ITF Futures tournaments.

2010–2014: Top 300 in singles
Ćaćić competed both in singles and doubles events, mainly on ITF Men's Circuit and ATP Challenger Tour level.

Having played with his compatriots, including Marko Djokovic, Ilija Bozoljac and Dušan Lajović, he has taken part in three ATP World Tour main doubles tournaments held in Belgrade (in 2010 and 2012) and Umag (in 2012), where he lost in the opening rounds.

In the summer of 2014, after a series of successful appearances in Challenger tournaments played on a clay surface, Ćaćić moved into the top 300 and achieved his career-high ATP singles ranking of No. 281.

2015
Ćaćić did not participate in any tournament during the 2015 season due to injury, which caused a drop from both world singles and doubles rankings.

2016
He recorded his first win on ATP World Tour level in the first round of Croatia Open, defeating Aljaž Bedene in three sets.

2019: First doubles title and top 100 debut, Serbian No. 1 in doubles
In the summer of 2019, he won his first ATP Challenger title at the Shkymkent Challenger with Yang Tsung-hua.

Later that year, he won his first ATP tour level doubles title with his compatriot Dušan Lajović at the Chengdu Open, defeating Jonathan Erlich and Fabrice Martin, 7–6(11–9), 3–6, [10–3]. As a result, he reached the top 100 on 30 September 2019.

2020: Inaugural ATP Cup champion, Second doubles title
In January, he was part of Serbian team that won inaugural 2020 ATP Cup by defeating Spain in the final.

In February, he won his second ATP Tour title in Lyon, partnering Mate Pavić.

2021: Third doubles title, French Open quarterfinal, Three more finals, top 35
He partnered with Tomislav Brkić and won the doubles title at the ATP Buenos Aires, which was only their second tournament as a team. They also reached the finals of Andalucía Open and semifinals at Serbia Open. Following these results, he entered the top 50 in doubles at a career-high ATP doubles ranking of No. 48 on 26 April 2021.

The pair also reached the quarterfinals of the 2021 French Open for their best showing in their careers, defeating Marcel Granollers/Horacio Zeballos and Máximo González/Simone Bolelli en route.

On 8 November 2021, Cacic reached a career high of World No. 35 in doubles.

2022: Masters 1000 quarterfinal
He reached the quarterfinals at the 2022 Mutua Madrid Open with partner Brkic, losing to eventual champions Wesley Koolhof and Neal Skupski.

2023: Australian Open third round, Davis Cup quarterfinal
Partnering Aisam-ul-Haq Qureshi, he reached the third round at the 2023 Australian Open.

In April, partnering Miomir Kecmanović, Cacic reached the final of the 2023 Estoril Open, losing to Sander Gillé and Joran Vliegen.

In July, partnering Victor Vlad Cornea, Cacic reached the semifinals of the Hamburg Open.

In September, during the Davis Cup Finals in Valencia, Cacic partnered with Miomir Kecmanović, and the Serbian Davis Cup team emerged victorious against South Korean pair Song Min-kyu and Nam Ji-sung. In the tie against Spain, paired again with Kecmanović, they won in straight sets against Alejandro Davidovich Fokina and Marcel Granollers, helping Serbia win the tie 3:0 and reach the Davis Cup quarterfinals.

In October, again partnering Victor Vlad Cornea in Basel as a lucky loser pair, they reached the quarterfinals by defeating Swiss duo Mika Brunold and Marc-Andrea Hüsler in straight sets.

2024: United Cup debut, Win over world No.1
Partnering with compatriot Dejana Radanović, he made his debut at the 2024 United Cup as part of team Serbia.

At the 2024 Australian Open partnering Denys Molchanov the pair defeated the world No. 1 and No. 2 players, the top seeded pair of Austin Krajicek and Ivan Dodig in the second round to reach the third round for the second time at this Major.