The Association of Tennis Professionals (ATP) is the governing body of the men's professional tennis circuits – the ATP Tour, the ATP Challenger Tour and the ATP Champions Tour. It was formed in September 1972 by Donald Dell, Jack Kramer, and Cliff Drysdale to protect the interests of professional tennis players, and Drysdale became the first president. Since 1990 the association has organized the ATP Tour, the worldwide tennis tour for men and linked the title of the tour with the organization's name. It is the governing body of men's professional tennis. In 1990 the organization was called the ATP Tour, which was renamed in 2001 as just ATP and the tour being called ATP Tour. In 2009 the name of the tour was changed again and was known as the ATP World Tour, but changed again to the ATP Tour by 2019. It is an evolution of the tour competitions previously known as Grand Prix tennis tournaments and World Championship Tennis (WCT). The ATP's global headquarters are in London. ATP Americas is based in Ponte Vedra Beach, Florida; ATP Europe is headquartered in Monaco; and ATP International, which covers Africa, Asia and Australasia, is based in Sydney, Australia.
The ATP Tour is the sole worldwide top-tier tennis tour for men organized by the Association of Tennis Professionals founded in 1990 that replaced the earlier dual Grand Prix Circuit and WCT Circuit. The second-tier tour is the ATP Challenger Tour and the third-tier is the ITF Men's World Tennis Tour. The equivalent women's organisation is the WTA Tour.
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. 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.
Jamie Robert Murray, is a British professional tennis player from Scotland who specialises in doubles. He is a seven-time Grand Slam doubles champion, a Davis Cup winner, and a former doubles world No. 1. Murray is the elder brother of fellow tennis player and former singles world No. 1, Andy Murray.
Illya Vasylovych Marchenko is a Ukrainian professional tennis player. He has a career high in singles of World No. 49 achieved on 26 September 2016 and of No. 268 in doubles achieved on 25 August 2014. On the ATP Tour, Marchenko reached the semifinals of Moscow in 2009, the 2010 St. Petersburg Open and Doha in 2016.
The 2010 Penza Cup was a professional tennis tournament played on Hard court. This was the fifth edition of the tournament which is part of the 2010 ATP Challenger Tour. It took place in Penza, Russia between 19 July and 24 July 2010.
The 2009 Penza Cup was a professional tennis tournament played on Hard court. This was the fourth edition of the tournament which was part of the 2009 ATP Challenger Tour. It took place in Penza, Russia between 20 July and 26 July 2009.
The 2011 Penza Cup was a professional tennis tournament played on hard courts. It was the sixth edition of the tournament which was part of the 2011 ATP Challenger Tour. It took place in Penza, Russia between 18 and 24 July 2011.
Arnau Brugués Davi is a retired professional tennis player from Spain.
Nikola Ćaćić is a Serbian professional tennis player. He has a career-high ranking of World No. 35 in doubles achieved on 8 November 2021. He has won three doubles titles in the ATP Tour, four doubles titles in the ATP Challenger Tour, and five singles and 32 doubles titles in ITF Futures tournaments.
Divij Sharan is an Indian professional tennis player. He specialises in doubles and competes on the ATP World Tour. He has won five ATP doubles titles and represents India in the Davis Cup. He won a gold medal in the men's doubles at the 2018 Asian Games.
Guido Pella is an Argentine former professional tennis player. In August 2019, Pella reached his career best world No. 20 in singles. In July 2019, he peaked at No. 55 in doubles.
The 2012 Penza Cup was a professional tennis tournament played on hard courts. It was the seventh edition of the tournament which was part of the 2012 ATP Challenger Tour. It took place in Penza, Russia between 16 and 22 July 2012.
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 2013 ATP Challenger Tour Finals is a tennis tournament played at the Sociedade Harmonia de Tênis in São Paulo, Brazil, between 13 and 17 November 2013. It will be the third edition of the event.
Emilio Gómez Estrada is an Ecuadorian professional tennis player competing primarily on the ATP Challenger Tour. On 20 February 2023, he reached his highest ATP singles ranking of world No. 90 and a doubles ranking of world No. 254, achieved on 14 September 2015. He is currently the No. 3 Ecuadorian tennis player.
Kamil Majchrzak is a Polish professional tennis player. He has a career high ATP singles ranking of World No. 75 achieved on 28 February 2022 and a career high ATP doubles ranking of World No. 241 achieved on 8 August 2016.
Tristan Lamasine is a French, professional tennis player.
The 2019 ATP Tour was the global elite men's professional tennis circuit organised by the Association of Tennis Professionals (ATP) for the 2019 tennis season. The 2019 ATP Tour calendar comprised the Grand Slam tournaments, the ATP Tour Masters 1000, the ATP Finals, the ATP Tour 500 series, the ATP Tour 250 series and Davis Cup. Also included in the 2019 calendar were the Hopman Cup, the Laver Cup and the Next Gen ATP Finals which do not distribute ranking points. For the Masters series events the ATP introduced a shot clock. Players had a minute to come on court, 5 minutes to warmup, and then a minute to commence play, as well as 25 seconds between points.
2012 Penza Cup 
