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 pair, retirement 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. On the last day of 2024, through social media, Ćaćić announced his retirement from professional tennis. == Performance timelines ==