The ATP International Series was a series of professional tennis tournaments held internationally as part of the ATP Tour from 2000 to 2008.
The ATP Challenger Tour is the secondary professional tennis circuit organized by the ATP. The 2009 ATP Challenger Tour calendar comprised 20 top tier Tretorn SERIE+ tournaments, and 142 regular series tournaments, with prize money ranging from $25,000 up to $150,000.
The ATP Challenger Tour is the secondary professional tennis circuit organized by the ATP. The 2010 ATP Challenger Tour calendar comprises 13 top tier Tretorn SERIE+ tournaments, and approximately 150 regular series tournaments, with prize money ranging from $35,000 up to $150,000.
The ATP Challenger Tour was the secondary professional tennis circuit organized by the Association of Tennis Professionals (ATP). The 2011 ATP Challenger Tour calendar comprised 15 top tier Tretorn SERIE+ tournaments, and approximately 150 regular series tournaments, with prize money ranging from $35,000 up to $150,000.
The ATP Challenger Tour was the secondary professional tennis circuit organized by the ATP. The 2012 ATP Challenger Tour calendar comprised 15 top tier Tretorn SERIE+ tournaments, and a total of 148 tournaments, with prize money ranging from $35,000 up to $150,000.
The ATP Challenger Series is the second tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 1991 ATP Challenger Series calendar comprised 94 tournaments, with prize money ranging from $25,000 up to $100,000.
The ATP Challenger Series is the second tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 1992 ATP Challenger Series calendar comprised 89 tournaments, with prize money ranging from $25,000 up to $100,000.
The ATP Challenger Series is the second tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 1993 ATP Challenger Series calendar comprised 97 tournaments, with prize money ranging from $25,000 up to $100,000.
The ATP Challenger Series is the second tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 1995 ATP Challenger Series calendar comprised 86 tournaments, with prize money ranging from $25,000 up to $125,000.
The ATP Challenger Series is the second tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 1996 ATP Challenger Series calendar comprised 98 tournaments, with prize money ranging from $25,000 up to $125,000.
The ATP Challenger Series is the second tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 1997 ATP Challenger Series calendar comprised 107 tournaments, with prize money ranging from $25,000 up to $125,000.
The ATP Challenger Series is the second tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 1999 ATP Challenger Series calendar comprised 115 tournaments, with prize money ranging from $25,000 up to $125,000.
The ATP Challenger Series is the second tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 2000 ATP Challenger Series calendar comprised 121 tournaments, with prize money ranging from $25,000 up to $125,000.
The ATP Challenger Series is the second tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 2001 ATP Challenger Series calendar comprised 135 tournaments, with prize money ranging from $25,000 up to $125,000.
The ATP Challenger Series is the second tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 2003 ATP Challenger Series calendar comprised 135 tournaments, with prize money ranging from $25,000 up to $150,000.
The ATP Challenger Series is the second tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 2004 ATP Challenger Series calendar comprised 146 tournaments, with prize money ranging from $25,000 up to $150,000.
The ATP Challenger Series is the second tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 2005 ATP Challenger Series calendar comprised 150 tournaments, with prize money ranging from $25,000 up to $150,000.
The ATP Challenger Series is the second tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 2006 ATP Challenger Series calendar comprised 161 tournaments, with prize money ranging from $25,000 up to $125,000.
The ATP Challenger Series is the second tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 2007 ATP Challenger Series calendar comprised 174 tournaments, with prize money ranging from $25,000 up to $150,000.
The Association of Tennis Professionals (ATP) Challenger Tour in 2023 is the secondary professional tennis circuit organized by the ATP. The 2023 ATP Challenger Tour calendar comprises 94 tournaments, with prize money ranging from $40,000 up to $220,000. It is the 46th edition of challenger tournaments cycle, and 15th under the name of Challenger Tour.
Brazil 
Frédéric Niemeyer 
Brandon Coupe 
Germany 
Aleksandar Kitinov 
Johan Landsberg 
Gabriel Trifu 
France 
Irakli Labadze 
Ben Ellwood 
Giorgio Galimberti 
Raemon Sluiter 
Poland 
Serbia 
Mario Ančić 
Dušan Vemić 
Jan Hernych 
Shaun Rudman 
Julian Knowle 
Great Britain 
Denis Golovanov 
Vietnam 
Takao Suzuki 
Amir Hadad 
Mark Merklein 
Tuomas Ketola 
Dick Norman 
Orest Tereshchuk 
Yves Allegro 
Karol Beck 
Ecuador 
Iván Miranda 
New Zealand 
Didac Pérez 
Mexico 
Orlin Stanoytchev 
Tunisia 
Andrés Schneiter 
Bermuda 
Vladimir Voltchkov 
Slovenia 
Uzbekistan 
Jimmy Wang 
Hungary 
Lee Hyung-taik 
Danai Udomchoke