Łukasz Kubot is an inactive Polish professional tennis player who is a former world No. 1 in doubles.
Marcelo Fedrizzi Demoliner is a Brazilian professional tennis player. A doubles specialist, he 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.
The 2019 Halle Open was a tennis tournament played on outdoor grass courts. It was the 27th edition of the Halle Open and part of the ATP Tour 500 series of the 2019 ATP Tour. It took place at the Gerry Weber Stadion in Halle, Germany, between 17 June and 23 June 2019.
The 2019 Erste Bank Open was a men's tennis tournament played on indoor hard courts. It was the 45th edition of the event, and part of the ATP Tour 500 Series of the 2019 ATP Tour. It was held at the Wiener Stadthalle in Vienna, Austria, from 21 October until 27 October 2019.
The 2022 Grand Prix Hassan II was a professional tennis tournament played in Marrakesh, Morocco on clay courts.
Bob and Mike Bryan were the two-time defending champions, but they retired in August 2020 so they did not defend their titles. Ariel Behar and Gonzalo Escobar won the title, defeating Christian and Ryan Harrison in the final, 6–7(5–7), 7–6(7–4), [10–4].
The 2021 Mexican Open was a professional tennis tournament played on outdoor hard courts. It was the 28th edition of the men's Mexican Open, and part of the 2021 ATP Tour. It took place in Acapulco, Mexico between 15 and 20 March 2021, at the Princess Mundo Imperial.
The 2021 Monte-Carlo Masters was a tennis tournament for male professional players played on outdoor clay courts. It was the 114th edition of the annual Monte Carlo Masters tournament. It took place at the Monte Carlo Country Club in Roquebrune-Cap-Martin, France as a part of the Masters 1000 event on the 2021 ATP Tour.
The 2021 BMW Open was a men's tennis tournament played on outdoor clay courts. It was the 105th edition of the event and part of the ATP Tour 250 series of the 2021 ATP Tour. It took place at the MTTC Iphitos complex in Munich, Germany, from 26 April until 2 May 2021.
Nikola Mektić and Mate Pavić defeated Rajeev Ram and Joe Salisbury in the final, 6–4, 7–6(7–4), to win the men's doubles tennis title at the 2021 Italian Open. The second seeds did not drop a set en route to their third ATP Tour Masters 1000 victory together and their sixth title overall of the season. The all-Croatian pair also became the second doubles team to have reached the finals of the first four Masters 1000 tournaments in a season after the Bryan brothers, who last accomplished the feat in 2018. Ram and Salisbury were competing for their first title of the season and their fourth title together.
The 2021 Halle Open was a tennis tournament played on outdoor grass courts. It was the 28th edition of the Halle Open and part of the ATP Tour 500 series of the 2021 ATP Tour. It took place at the OWL Arena in Halle, Germany, between 14 and 20 June 2021.
Marcelo Demoliner and Santiago González defeated Ariel Behar and Gonzalo Escobar in the final, 4–6, 6–3, [10–8], to win the doubles tennis title at the 2021 Stuttgart Open. It was their second title as a team, their first in three years. Behar and Escobar were contesting for their third title of the season.
Kevin Krawietz and Horia Tecău defeated Félix Auger-Aliassime and Hubert Hurkacz in the final, 7–6(7–4), 6–4, to win the doubles tennis title at the 2021 Halle Open. It was their first title as a team.
The 2021 Winston-Salem Open was a men's tennis tournament played on outdoor hard courts. It was the 52nd edition of the Winston-Salem Open, and part of the ATP Tour 250 Series of the 2021 ATP Tour. It took place at Wake Forest University in Winston-Salem, North Carolina, United States, from August 21 through August 28, 2021. It was the last event on the 2021 US Open Series before the 2021 US Open.
The 2021 Moselle Open was a tennis tournament played on indoor hard courts. It was the 23rd edition of the Moselle Open, and part of the ATP Tour 250 series of the 2021 ATP Tour. It took place at the Arènes de Metz from 20 September to 26 September 2021.
The 2021 Rolex Paris Masters was a professional tennis tournament played on indoor hard courts. It was the 49th edition of the tournament, and a Masters 1000 event on the 2021 ATP Tour. It was held at the Palais omnisports de Paris-Bercy in Paris, France, between 1 and 7 November 2021.
The 2022 Halle Open was a tennis tournament played on outdoor grass courts. It was the 29th edition of the Halle Open and part of the ATP Tour 500 series of the 2022 ATP Tour. It took place at the OWL Arena in Halle, Germany, between 13 and 19 June 2022.
Marcel Granollers and Horacio Zeballos defeated Tim Pütz and Michael Venus in the final, 6–4, 6–7(5–7), [14–12] to win the doubles tennis title at the 2022 Halle Open. The pair saved two championship points en route to the title.
The 2022 Atlanta Open was a professional tennis tournament played on hard courts. It was the 34th edition of the tournament, and part of the 2022 ATP Tour. It took place at Atlantic Station in Atlanta, United States between July 24 and 31, 2022.
Wesley Koolhof and Neal Skupski defeated Dan Evans and John Peers in the final, 6–2, 4–6, [10–6] to win the men's doubles tennis title at the 2022 Canadian Open.
Marin Čilić [1] 
Marcelo Demoliner / 
Santiago González [2] 
