The 2020 Hamburg European Open was a men's tennis tournament played on outdoor red clay courts. It was the 114th edition of the German Open Tennis Championships and part of the ATP Tour 500 series of the 2020 ATP Tour. Originally scheduled for 13 to 19 July 2020, but due to the ongoing COVID-19 pandemic, it was rescheduled from 20 to 27 September 2020 and took place at the Am Rothenbaum in Hamburg, Germany.
Dominic Thiem was the defending champion and chose not to defend his title, as he was still competing at the 2020 US Open.
The 2020 Forte Village Sardegna Open was an ATP tournament organised for male professional tennis players, held in Sardinia, Italy, in mid-October 2020 on outdoor clay courts. It was primarily organised due to the cancellation of many tournaments during the 2020 season, because of the ongoing COVID-19 pandemic. It was the first edition of the tournament, and it took place in Pula, Italy, from October 12 through 18, 2020.
The 2021 Sardegna Open was a tennis tournament on the 2021 ATP Tour. It was played on outdoor clay courts in Cagliari, Sardinia, Italy. It was organised with a single-year licence in 2021, and was held at Tennis Club Cagliari from April 5 to 11, 2021.
Nikoloz Basilashvili defeated Jan-Lennard Struff in the final, 6–4, 7–6(7–5) to win the men's singles tennis title at the 2021 Bavarian International Tennis Championships. After not dropping a set en route to his victory, Basilashvili earned his second title of the season and his fifth career ATP Tour singles title overall. Struff was in contention to win his first title in his first tour-level final.
The 2021 MercedesCup was a men's tennis tournament played on outdoor grass courts. It was the 43rd edition of the Stuttgart Open, and part of the ATP Tour 250 series of the 2021 ATP Tour. It was held at the Tennis Club Weissenhof in Stuttgart, Germany, from 8 June until 13 June 2021. Unseeded Marin Čilić won the singles title.
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.
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 Hamburg European Open was a combined men's and women's tennis tournament played on outdoor clay courts. It was the 115th edition of the event for the men and the 19th edition for the women, after last tournament being held in 2002. The tournament was classified as a WTA 250 tournament on the 2021 WTA Tour and as an ATP Tour 500 series on the 2021 ATP Tour. The tournament took place at the Am Rothenbaum in Hamburg, Germany between 6 and 18 July 2021.
The 2021 Swiss Open Gstaad was a men's tennis tournament played on outdoor clay courts. It was the 53rd edition of the Swiss Open, and part of the ATP Tour 250 Series of the 2021 ATP Tour. It took place at the Roy Emerson Arena in Gstaad, Switzerland, from 19 July through 25 July 2021.
The 2021 Washington Open was a tennis tournament played on outdoor hard courts. It was the 52nd edition of the Washington Open. The event was part of the ATP Tour 500 series of the 2021 ATP Tour and part of the US Open Series leading up to the US Open grand slam in September. The Washington Open took place at the William H.G. FitzGerald Tennis Center in Washington, D.C., United States, from July 31 to August 8, 2021.
The 2021 Western & Southern Open was a men's and women's tennis tournament played on outdoor hard courts from August 15–22, 2021, as part of the US Open Series. It was a Masters 1000 tournament on the 2021 ATP Tour and a WTA 1000 tournament on the 2021 WTA Tour.
The 2021 Kremlin Cup was a professional tennis tournament played on indoor hard courts. It was the 31st edition of the Kremlin Cup for the men and the 25th edition for the women. The tournament was part of the ATP 250 series of the 2021 ATP Tour, and of the WTA 500 series of the 2021 WTA Tour. It was held at the Irina Viner-Usmanova Gymnastics Palace and the Luzhniki Palace of Sports in Moscow, Russia, from 18 October through 24 October 2021.
The 2021 Erste Bank Open was a men's tennis tournament played on indoor hard courts. It was the 47th edition of the event, and part of the ATP Tour 500 Series of the 2021 ATP Tour. It was held at the Wiener Stadthalle in Vienna, Austria, from 25 until 31 October 2021. Second-seeded Alexander Zverev won the singles title.
The 2022 Melbourne Summer Set1 was one of two tournaments of the Melbourne Summer Set. The Melbourne Summer Set 1 featured an ATP Tour 250 tournament and a WTA 250 tournament, both played on hardcourts and as part of the 2022 WTA Tour.
The 2022 BMW Open was a men's tennis tournament played on outdoor clay courts. It was the 106th edition of the event and part of the ATP Tour 250 series of the 2022 ATP Tour. It took place at the MTTC Iphitos complex in Munich, Germany, from 25 April until 1 May 2022.
The 2022 Barcelona Open Banc Sabadell was a men's tennis tournament played on outdoor clay courts at the Real Club de Tenis Barcelona in Barcelona, Spain, from 18 to 24 April 2022. It was the 69th edition of the event and part of the ATP Tour 500 series of the 2022 ATP Tour.
The 2023 BMW Open was a men's tennis tournament currently played on outdoor clay courts. It was the 107th edition of the event and part of the ATP Tour 250 series of the 2023 ATP Tour. It took place at the MTTC Iphitos complex in Munich, Germany, from 17 to 23 April 2023.
Defending champion Carlos Alcaraz defeated Jan-Lennard Struff in the final, 6–4, 3–6, 6–3 to win the men's singles tennis title at the 2023 Madrid Open. It was his fourth Masters 1000 title. Struff was the first lucky loser to reach a Masters final.
The 2023 Hamburg European Open was a combined men's and women's tennis tournament played on outdoor clay courts. It was the 117th edition of the event for the men and the 21st edition for the women. The tournament was classified as an ATP Tour 500 series on the 2023 ATP Tour and as a WTA 250 tournament on the 2023 WTA Tour. The tournament took place at Am Rothenbaum in Hamburg, Germany between 23 and 30 July 2023.
Nikoloz Basilashvili 
Wesley Koolhof / 
Kevin Krawietz 
