Challenger, Bombardier Challenger 600, ATP Challenger Tour, ATP Challenger Arad, ATP Challenger Brașov, Bombardier Challenger 850, The Challenger, ISU-Challenger-Serie, ATP Challenger Maui, ATP Challenger Telde, ATP Challenger Timișoara, ATP Challenger Porto-2, Challenger (Raumfähre), ATP Challenger Río Grande, ATP Challenger Brazzaville, ATP Challenger Kachetien, ATP Challenger Cherbourg, Chess Challenger, ATP Challenger Kigali, ATP Challenger Andrézieux-Bouthéon, ATP Challenger Kōbe, ATP Challenger Rosario, ATP Challenger Båstad, ATP Challenger Piracicaba, ATP Challenger Córdoba, ATP Challenger Wuhan, ATP Challenger Gimcheon, Challenger Series, ATP Challenger Meran, ATP Challenger Kuwait, ATP Challenger Raʿanana, ATP Challenger Danderyd, ATP Challenger Samarqand, ATP Challenger St. Ulrich in Gröden, ATP Challenger São Paulo (2013–2016), ATP Challenger Itajaí, ATP Challenger Ahmedabad, ATP Challenger Recanati, ATP Challenger Hangzhou, ATP Challenger Mantua, ATP Challenger Savannah

ATP Challenger Drummondville, ATP Challenger Tanger, ATP Challenger San Miguel de Tucumán, ATP Challenger Lugano, ATP Challenger Antofagasta, ATP Challenger Dijon, ATP Challenger Shenzhen-3, ATP Challenger Ostende, ATP Challenger Ojai, ATP Challenger Acapulco-2, ATP Challenger Fargʻona, ATP Challenger Rogaška Slatina, ATP Challenger Sibiu, ATP Challenger Manama, ATP Challenger Tour 2009, ATP Challenger Garmisch-Partenkirchen, ATP Challenger Fès, ATP Challenger Tallahassee, ATP Challenger Reggio nell’Emilia, ATP Challenger Tunica Resorts, ATP Challenger Knokke-Heist, ATP Challenger Guimarães, ATP Challenger Flushing Meadow, ATP Challenger Astana (seit 2016), ATP Challenger Charlottesville, ATP Challenger Nottingham-4, ATP Challenger Sanremo, ATP Challenger Daytona Beach, ATP Challenger Santa Clarita, ATP Challenger Pozoblanco, ATP Challenger São Paulo (2004), ATP Challenger Tiburon, ATP Challenger Toluca de Lerdo, Bombardier Challenger 300, ATP Challenger Granby, ATP Challenger Dharwad, ATP Challenger Tulsa, ATP Challenger Aptos, ATP Challenger Champaign, Triple C Challenger Cars, ATP Challenger Astana (2010–2014), ATP Challenger Donezk, ATP Challenger Benin City, ATP Challenger Toljatti, ATP Challenger Meknès, ATP Challenger Floridablanca, ATP Challenger Bogotá (1988–1996), ATP Challenger Anning, ATP Challenger Chennai, ATP Challenger Besançon

Challenger, Bombardier Challenger 600, ATP Challenger Tour, ATP Challenger Arad, ATP Challenger Brașov, Bombardier Challenger 850, The Challenger, ISU-Challenger-Serie, ATP Challenger Maui, ATP Challenger Telde, ATP Challenger Timișoara, ATP Challenger Porto-2, Challenger (Raumfähre), ATP Challenger Río Grande, ATP Challenger Brazzaville, ATP Challenger Kachetien, ATP Challenger Cherbourg, Chess Challenger, ATP Challenger Kigali, ATP Challenger Andrézieux-Bouthéon, ATP Challenger Kōbe, ATP Challenger Rosario, ATP Challenger Båstad, ATP Challenger Piracicaba, ATP Challenger Córdoba, ATP Challenger Wuhan, ATP Challenger Gimcheon, Challenger Series, ATP Challenger Meran, ATP Challenger Kuwait, ATP Challenger Raʿanana, ATP Challenger Danderyd, ATP Challenger Samarqand, ATP Challenger St. Ulrich in Gröden, ATP Challenger São Paulo (2013–2016), ATP Challenger Itajaí, ATP Challenger Ahmedabad, ATP Challenger Recanati, ATP Challenger Hangzhou, ATP Challenger Mantua, ATP Challenger Savannah, ATP Challenger Drummondville, ATP Challenger Tanger, ATP Challenger San Miguel de Tucumán, ATP Challenger Lugano, ATP Challenger Antofagasta, ATP Challenger Dijon, ATP Challenger Shenzhen-3, ATP Challenger Ostende, ATP Challenger Ojai, ATP Challenger Acapulco-2, ATP Challenger Fargʻona, ATP Challenger Rogaška Slatina, ATP Challenger Sibiu, ATP Challenger Manama, ATP Challenger Tour 2009, ATP Challenger Garmisch-Partenkirchen, ATP Challenger Fès, ATP Challenger Tallahassee, ATP Challenger Reggio nell’Emilia, ATP Challenger Tunica Resorts, ATP Challenger Knokke-Heist, ATP Challenger Guimarães, ATP Challenger Flushing Meadow, ATP Challenger Astana (seit 2016), ATP Challenger Charlottesville, ATP Challenger Nottingham-4, ATP Challenger Sanremo, ATP Challenger Daytona Beach, ATP Challenger Santa Clarita, ATP Challenger Pozoblanco, ATP Challenger São Paulo (2004), ATP Challenger Tiburon, ATP Challenger Toluca de Lerdo, Bombardier Challenger 300, ATP Challenger Granby, ATP Challenger Dharwad, ATP Challenger Tulsa, ATP Challenger Aptos, ATP Challenger Champaign, Triple C Challenger Cars, ATP Challenger Astana (2010–2014), ATP Challenger Donezk, ATP Challenger Benin City, ATP Challenger Toljatti, ATP Challenger Meknès, ATP Challenger Floridablanca, ATP Challenger Bogotá (1988–1996), ATP Challenger Anning, ATP Challenger Chennai, ATP Challenger Besançon, ATP Challenger Ponte Vedra Beach, ATP Challenger Ibagué, ATP Challenger Bogotá, ATP Challenger Košice, ATP Challenger Saint-Brieuc, ATP Challenger Mérida, ATP Challenger Busan, Oracle Challenger Series – Houston 2019, Oracle Challenger Series – Chicago 2018, WTA Challenger Taipeh, ATP Challenger Székesfehérvár, ATP Challenger Aracaju, George Edward Challenger, Oracle Challenger Series – Houston 2018, ATP Challenger Dallas, ATP Challenger São Paulo (2013–2015), ATP Challenger São Paulo (2009–2010), ATP Challenger São Paulo (seit 2020), ATP Challenger Nottingham-2, ATP Challenger Viña del Mar, ATP Challenger São Leopoldo, Men’s Rimouski Challenger 2011, ATP Challenger Cortina d’Ampezzo, ATP Challenger Genua, ATP Challenger La Réunion, Bressanone Challenger 1999, ATP Challenger Orléans, Munich Challenger 1989, ATP Challenger Fürth, Ostend Challenger 1993, ATP Challenger Ulm, Kyoto Challenger 1978, Taipei Challenger 1992, Oracle Challenger Series – Indian Wells 2020, Oracle Challenger Series – Newport Beach 2018, Tashkent Challenger 2016, Oracle Challenger Series – Newport Beach 2019, Oracle Challenger Series – Newport Beach 2020, Oracle Challenger Series – Indian Wells 2018, ATP Challenger Karlsruhe, Oracle Challenger Series – Indian Wells 2019, ATP Orbetello Challenger 2011, Relyaid Natomas Challenger 2012, Kolkata Challenger 2000, Tangier Challenger 2000, Compaq Challenger 2001, ATP Challenger Prostějov, Challenger Ficrea 2014, ATP Challenger Heilbronn-2, Oracle Challenger Series – New Haven 2019, ATP Challenger São Paulo (2012–2013), Santiago Challenger 1992, ATP Challenger Bogotá (Bancolombia Open), ATP Challenger Santa Cruz, ATP Challenger Bogotá (Copa Petrobras), Lucknow Challenger I 1999, ATP Challenger Donostia-San Sebastián, Hancock Bank Men’s Challenger 2007, ATP Challenger São Paulo (1982–2002), Granby Challenger 1995