The ATP Challenger Tour, known until the end of 2008 as the ATP Challenger Series, is a series of international men's professional tennis tournaments. It was founded in 1976 when it replaced the ILTF Satellite Circuit as the second tier of tennis. The Challenger Tour events are the second-highest tier of tennis competition, behind the ATP Tour. The ITF World Tennis Tour tournaments are on the entry-level of international professional tennis competition. The ATP Challenger Tour is administered by the Association of Tennis Professionals. Players who succeed on the ATP Challenger Tour earn sufficient ranking points to become eligible for main draw or qualifying draw entry at ATP Tour tournaments. Players on the Challenger Tour are usually young players looking to advance their careers, those who fail to qualify for ATP events, or former ATP players looking to get back into the big tour.
The GHI Bronx Tennis Classic was a tennis tournament for male professional players played on hard courts. The event was held annually in the Bronx, New York, as part of the ATP Challenger Series.
The Almaty Challenger is a professional tennis tournament played on clay courts. It is currently part of the Association of Tennis Professionals (ATP) Challenger Tour. It is held annually in Almaty, Kazakhstan since 2017.
The BFD Energy Challenger is a professional tennis tournament played on clay courts. It is currently part of the Association of Tennis Professionals (ATP) Challenger Tour. It is held annually in Rome, Italy since 2015.
The Morocco Tennis Tour – Casablanca II is a professional tennis tournament played on clay courts. It is currently part of the Association of Tennis Professionals (ATP) Challenger Tour. It is held annually in Casablanca, Morocco since 2015.
The Hungarian Challenger Open was a professional tennis tournament played on hard courts on the ATP Challenger Tour. It was held annually in Budapest, Hungary from 2016 to 2019.
The 2017 Shymkent Challenger was a professional tennis tournament played on clay courts. It was the first edition of the tournament which was part of the 2017 ATP Challenger Tour. It took place in Shymkent, Kazakhstan between 22 and 27 May 2017.
The Marbella Tennis Open is a professional tennis tournament played on clay courts. It is currently part of the Association of Tennis Professionals (ATP) Challenger Tour and WTA 125K series. The ATP event has been held annually in Marbella, Spain, from 2018 while the WTA edition started in 2022.
The 2018 Shymkent Challenger was a professional tennis tournament played on clay courts. It was the second edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in Shymkent, Kazakhstan between 4 and 9 June 2018.
Jurij Rodionov is an Austrian professional tennis player. He has a career high ATP singles ranking of world No. 87 achieved on 19 February 2024. He also has a career high doubles ranking of No. 254 achieved on 9 September 2024. He is currently the No. 2 Austrian player.
The IsarOpen was a professional tennis tournament played on clay courts. It was part of the ATP Challenger Tour. The tournament was only held once in Pullach, Germany in 2018. Afterwards the tournament relocated to Augsburg, renamed as the Schwaben Open. The organizer, TG Großhesselohe, had achieved promotion of their men's team to the Tennis Bundesliga for the 2019 season and foresaw difficulties with conflicting dates, organization and focus if two big tennis events took place in summer.
The Oracle Challenger Series – Houston is a professional tennis tournament played on hard courts. It is currently part of the ATP Challenger Tour and the Women's Tennis Association (WTA) 125K series. It is held annually in Houston, United States since 2018. The ATP Challenger Tour returned to Houston, Texas for the first time since 2001, with the inaugural Oracle Challenger Series Houston making its debut in November. Held on the campus of Rice University, at the new $9 million George R. Brown Tennis Complex. Houston is will become one of just two U.S. cities to host tournaments on both the ATP World Tour and ATP Challenger Tour, with the ATP World tour tournament being the U.S. Men's Clay Court Championships. The Oracle Challenger Series – Houston is the second stop for the Oracle Challenger Series calendar. The winner of the Oracle Challenger Series earns a wild card into Indian Wells Masters.
Emilio Nava is an American professional tennis player. He has a career-high ATP singles ranking of No. 124 achieved on April 15, 2024 and a doubles ranking of No. 187 achieved on October 28, 2024.
The 2019 Shymkent Challenger was a professional tennis tournament played on clay courts. It was the third edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Shymkent, Kazakhstan between 6 and 12 May 2019.
The 2019 Shymkent Challenger II was a professional tennis tournament played on clay courts. It was the fourth edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Shymkent, Kazakhstan between 10 and 16 June 2019.
The Yokkaichi Challenger is a professional tennis tournament played on hard courts. It is currently part of the ATP Challenger Tour. It is held annually in Yokkaichi, Japan since 2019.
The Oracle Challenger Series – New Haven was a professional tennis tournament played on hard courts. It was part of the ATP Challenger Tour and the Women's Tennis Association (WTA) 125K series. It was held in New Haven, Connecticut, United States in 2019.
The Sparta Prague Open Challenger is a professional tennis tournament played on clay courts. It is currently part of the Association of Tennis Professionals (ATP) Challenger Tour. It has been held in Prague, Czech Republic since 2000 at TK Sparta Prague, founded in 1905 near Stromovka, inside Prague's Bubeneč district.
The 2022 Shymkent Challenger was a professional tennis tournament played on clay courts. It was the fifth edition of the tournament which was part of the 2022 ATP Challenger Tour. It took place in Shymkent, Kazakhstan between 9 and 14 May 2022.
The 2022 Shymkent Challenger II was a professional tennis tournament played on clay courts. It was the sixth edition of the tournament which was part of the 2022 ATP Challenger Tour. It took place in Shymkent, Kazakhstan between 16 and 21 May 2022.
2022 Shymkent Challenger II 
