Marcelo Demoliner

Marcelo Fedrizzi Demoliner (born 18 January 1989) is a Brazilian professional tennis player, who specializes in doubles. He reached a career-high doubles ranking of world No. 34 in November 2017. Demoliner has won five doubles titles.

He won his first title at the ATP 250 Antalya Open with Santiago González in June 2018, after having reached six finals at that level. He was runner-up at the ATP 500 Vienna in 2018 and Saint Petersburg in 2020.

Alongside Maria José Martinez Sanchez, he was a mixed doubles semifinalist in 2017 Wimbledon Championships and 2018 Australian Open.

Career 2006-2007: Turned Professional Demoliner turned professional in 2006, playing smaller tournaments (Futures).

In 2007, he played his first Challenger. At this time, he was considered one of the promises of the sport in Brazil. Following his return, his best results were two runner-ups at the ATP 250 in Quito and Bastad, a semifinal of the ATP 500 Rio de Janeiro, and a third round at the 2016 US Open.

2020: One title, one final In 2020, he reached two finals alongside Middlekoop. In the South American swing (clay), they won the Córdoba Open defeating Argentines Leonardo Mayer and Andrés Molteni in the final. In October, they were runner-ups St. Petersburg Open losing to the number 2 seeded pair, Austrian Jürgen Melzer and Frenchman Édouard Roger-Vasselin.

2021: Fourth ATP title, Hiatus due to surgery In 2021, Demoliner and his current partner Santiago González took the first dose of a COVID-19 vaccine at the 2021 Serbia Open. In grass season, he won his fourth ATP 250 title at Stuttgart Open defeating Uruguayan Ariel Behar and Gonzalo Escobar from Ecuador. On 31 October, Demoliner announced the end of his season due to a knee injury and soon afterward had a successful surgery.

2022: First Grand Slam quarterfinal with Sousa In 2022, Demoliner was expected to return at 2022 Chile Open after four months without playing but withdrew before the tournament. Nine months after his surgery, Demoliner returned at an ATP Challenger Tour event Brawo Open in Germany where partnering Jan-Lennard Struff he won the title.

Using a protected ranking at the US Open, he reached a Grand Slam quarterfinal for the first time in his career with his partner Joao Sousa, having never passed the third round at a Major.

2023: Return to top 100, Fifth title with Vavassori Ranked No. 98 at the 2023 Grand Prix Hassan II he won his fifth doubles title with Andrea Vavassori. As a result he moved back into the top 75 of the doubles rankings. This year, Demoliner also made the semifinals at the ATP 500 in Halle, was runner-up at the ATP 250 in Gstaad and made the semifinals at the ATP 250 in Winston-Salem and Buenos Aires.

At the 2023 Pan American Games, playing in doubles, Demoliner and Gustavo Heide overcame the hostile Chilean crowd and took gold. Both having to play two finals on the same day, after winning gold in men's and women's doubles, Demoliner and Luisa Stefani went to the mixed doubles final and obtained another medal, now a silver.

ATP Tour career finals

Doubles: 17 (5 titles, 12 runner-ups) Legend (doubles)Grand Slam tournaments (0–0)ATP Tour Finals (0–0)ATP Tour Masters 1000 (0–0)ATP Tour 500 Series (0–2)ATP Tour 250 Series (5–10)Finals by surfaceHard (1–5)Clay (2–7)Grass (2–0)Finals by settingOutdoor (4–9)Indoor (1–3)

ATP Challenger and Futures/ITF World Tennis Tour finals

Singles: 15 (7–8) Legend (singles)ATP Challenger Tour (1–1)Futures/ITF World Tennis Tour (6–7)Finals by surfaceHard (2–0)Clay (5–8)Grass (0–0)Carpet (0–0)

Doubles: 76 (45–31) Legend (doubles)ATP Challenger Tour (29–17)Futures/ITF World Tennis Tour (16–14)Finals by surfaceHard (8–4)Clay (35–25)Grass (2–2)Carpet (0–0)

Doubles performance timeline

Current through the end of 2025 US Open.