The PIF ATP Rankings are the merit-based method used by the Association of Tennis Professionals (ATP) for determining the qualification for entry as well as the seeding of players in all singles and doubles tournaments. The first rankings for singles were published on 23 August 1973 while the doubles players were ranked for the first time on 1 March 1976. Ranking points are awarded according to the stage of tournament reached, and the prestige of the tournament, with the four Grand Slam tournaments awarding the most points. The rankings are updated every Monday, and points are dropped 52 weeks after being awarded. Jannik Sinner is the current men's singles world No. 1.
Dimitar Kuzmanov is a Bulgarian professional tennis player. He competes on the ATP Challenger Tour. His highest singles ranking is No. 159 achieved on 29 August 2022, whilst his best doubles ranking is No. 438 achieved on 1 April 2019.
The 2017 Latrobe City Traralgon ATP Challenger was a professional tennis tournament played on outdoor hard court. It was the sixth edition of the tournament which was part of the 2017 ATP Challenger Tour. It took place in Traralgon, Australia between 23–29 October 2017.
The 2018 City of Playford Tennis International was a professional tennis tournament played on hard courts. It was the first edition of the tournament which was part of the 2018 ATP Challenger Tour and the 2018 ITF Women's Circuit. It took place in Playford, Australia between 1 and 7 January 2018.
The 2019 City of Playford Tennis International was a professional tennis tournament played on hard courts. It was the second edition of the tournament which was part of the 2019 ATP Challenger Tour and the 2019 ITF Women's World Tennis Tour. It took place in Playford, Australia between 31 December 2018 and 6 January 2019.
The 2019 Latrobe City Traralgon ATP Challenger was a professional tennis tournament played on outdoor hard court. It was the eighth edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Traralgon, Australia between 21–27 October 2019.
The 2019 City of Playford Tennis International II was a professional tennis tournament played on outdoor hard courts. It was the third edition of the tournament which was part of the 2019 ATP Challenger Tour and the 2019 ITF Women's World Tennis Tour. It took place in the City of Playford, Australia between 28 October and 3 November 2019.
Leandro Riedi is a Swiss professional tennis player. He has a career-high ATP singles ranking of world No. 117 achieved on 5 August 2024. He also has a career-high ATP doubles ranking of No. 211 achieved on 6 February 2023. He is currently the No. 2 Swiss player.
Coleman Wong Chak-lam is a tennis player from Hong Kong. He has a career high ATP singles ranking of No. 134 achieved on 23 September 2024 and a doubles ranking of No. 468 achieved on 9 September 2024. He is the highest-ranked male Hong Kong tennis player in history, having cracked the top 300 and later the top 150 in the rankings.
The 2022 City of Playford Tennis International was a professional tennis tournament played on outdoor hard courts. It was the fourth edition of the tournament which was part of the 2022 ATP Challenger Tour and the 2022 ITF Women's World Tennis Tour. It took place in the City of Playford, Australia between 24 and 30 October 2022.
The 2022 Calgary National Bank Challenger was a professional tennis tournament played on indoor hard courts. It was the third edition of the tournament which was part of the 2022 ATP Challenger Tour and the first edition of the tournament which was part of the 2022 ITF Women's World Tennis Tour. It took place in Calgary, Canada between 7 and 13 November 2022.
The 2023 City of Playford Tennis International was a professional tennis tournament played on outdoor hard courts. It was the fifth edition of the tournament which was part of the 2023 ATP Challenger Tour and the 2023 ITF Women's World Tennis Tour. It took place in the City of Playford, Australia between 23 and 29 October 2023.
Ryan Seggerman is an American tennis player. He has a career-high ATP doubles ranking of No. 88 achieved on 12 August 2024. He has a career-high singles ranking of No. 348 achieved on 26 August 2024.
The 2024 Rolex Paris Masters is a professional men's tennis tournament to be played on indoor hard courts. It will be the 52nd edition of this Masters 1000 event on the 2024 ATP Tour. It will take place at the Accor Arena in Paris from 28 October to 3 November 2024.
The 2024 Calgary National Bank Challenger was a professional tennis tournament played on indoor hard courts. It was the fifth edition of the tournament which was part of the 2024 ATP Challenger Tour and the third edition of the tournament which was part of the 2024 ITF Women's World Tennis Tour. It took place in Calgary, Canada between 14 and 20 October 2024.
The 2024 Open Saint-Brieuc was a professional tennis tournament played on hard courts. It was the 19th edition of the tournament which was part of the 2024 ATP Challenger Tour. It took place in Saint-Brieuc, France between 14 and 20 October 2024.
The 2024 Taipei OEC Open was a professional tennis tournament played on indoor hard courts. It was the first edition of the tournament which was part of the 2024 ATP Challenger Tour. It took place in Taipei, Taiwan between 21 and 27 October 2024.
The 2024 Brest Challenger was a professional tennis tournament played on hard courts. It was the ninth edition of the tournament which was part of the 2024 ATP Challenger Tour. It took place in Brest, France between 21 and 27 October 2024.
The 2024 Curitiba Challenger was a professional tennis tournament played on clay courts. It was the third edition of the tournament which was part of the 2024 ATP Challenger Tour. It took place in Curitiba, Brazil between 21 and 27 October 2024.
The 2024 Sioux Falls Challenger was a professional tennis tournament played on indoor hard courts. It was the first edition of the tournament which was part of the 2024 ATP Challenger Tour. It took place in Sioux Falls, South Dakota, United States between 21 and 27 October 2024.
James Duckworth 
Ryan Seggerman / 
