Thomas Mario Haas is a German former professional tennis player. He competed on the ATP Tour from 1996 to 2017. After breaking into the world top 100 in 1997 and reaching a career-high singles ranking of world No. 2 in May 2002, his career was interrupted by injuries: Haas twice dropped out of the world rankings due to being unable to play for twelve months. His first period of injury saw him miss the whole of the 2003 season, and he did not return to the world's top 10 until 2007. He also was absent between February 2010 and June 2011, but returned to world No. 11 in 2013 by reaching the quarterfinals at the French Open for the first time. Haas reached the semifinals of the Australian Open three times, and in Wimbledon once. He reached the quarterfinal stage of each of the major events. He won 15 career titles in singles, including a Masters title at the 2001 Stuttgart Masters, and a silver medal from the 2000 Summer Olympics.
Mikhail "Mischa" Alexandrovich Zverev is a German inactive professional tennis player. He achieved a career-high singles ranking of world No. 25 on 24 July 2017.
The 2008 Gerry Weber Open was a men's tennis tournament played on outdoor grass courts. It was the 16th edition of the Gerry Weber Open, and was part of the International Series of the 2008 ATP Tour. It took place at the Gerry Weber Stadion in Halle, North Rhine-Westphalia, Germany, from 7 June through 15 June 2008.
The 2009 Gerry Weber Open was a men's tennis tournament played on outdoor grass courts. It was the 17th edition of the event known that year as the Gerry Weber Open, and was part of the ATP World Tour 250 series of the 2009 ATP World Tour. It took place at the Gerry Weber Stadion in Halle, North Rhine-Westphalia, Germany, from 6 June through 14 June 2009.
The 2010 Gerry Weber Open was a men's tennis tournament played on outdoor grass courts. It was the 18th edition of the event known that year as the Gerry Weber Open and was part of the ATP World Tour 250 series of the 2010 ATP World Tour. It took place at the Gerry Weber Stadion in Halle, Germany, from 5 June through 13 June 2010. Eighth-seeded Lleyton Hewitt won the singles title. He snapped a 15 match losing streak against Federer and it was Federer's first loss at Halle since 2002.
The 2011 Gerry Weber Open was a men's tennis tournament played on outdoor grass courts. It was the 19th edition of the event known that year as the Gerry Weber Open and was part of the ATP World Tour 250 series of the 2011 ATP World Tour. It took place at the Gerry Weber Stadion in Halle, Germany, between 6 June and 12 June 2011. Unseeded Philipp Kohlschreiber won the singles title.
The 2012 Dallas Tennis Classic was a professional tennis tournament played on hard courts. It was the first edition of the tournament, which was part of the 2012 ATP Challenger Tour. It took place in Irving, Texas, United States between 12 and 18 March 2012.
The 2013 Gerry Weber Open was a men's tennis tournament played on outdoor grass courts. It was the 21st edition of the event known that year as the Gerry Weber Open and was part of the ATP World Tour 250 series of the 2013 ATP World Tour. It took place at the Gerry Weber Stadion in Halle, Germany, between 8 June and 16 June 2013. First-seeded Roger Federer won the singles title.
The 2014 Gerry Weber Open was a tennis tournament played on outdoor grass courts. It was the 22nd edition of the event known that year as the Gerry Weber Open and is part of the ATP World Tour 250 series of the 2014 ATP World Tour. It took place at the Gerry Weber Stadion in Halle, Germany, between 9 and 15 June 2014.
The 2014 MercedesCup was a men's tennis tournament played on outdoor clay courts. It was the 37th edition of the Stuttgart Open, and was part of the ATP World Tour 250 series of the 2014 ATP World Tour. It was held at the Tennis Club Weissenhof in Stuttgart, Germany, from 7 July until 13 July 2014. Third-seeded Roberto Bautista Agut won the singles title.
The 2015 BNP Paribas Open was a professional tennis tournament played at Indian Wells, California, in March 2015. It was the 42nd edition of the men's event, known as the BNP Paribas Open, and was classified as an ATP World Tour Masters 1000 event on the 2015 ATP World Tour and a Premier Mandatory event on the 2015 WTA Tour. Both the men's and the women's events took place at the Indian Wells Tennis Garden in Indian Wells, United States, from March 11 through March 22, 2015, on outdoor hard courts.
The 2015 MercedesCup was a men's tennis tournament played on grass courts. It was the 38th edition of the Stuttgart Open, and part of the ATP World Tour 250 series of the 2015 ATP World Tour. It was held at the Tennis Club Weissenhof in Stuttgart, Germany, from 8 June until 14 June 2015. This was the first year that the tournament was held on grass courts. First-seeded Rafael Nadal won the singles title.
The 2015 Gerry Weber Open was a tennis tournament played on outdoor grass courts. It was the 23rd edition of the event known that year as the Gerry Weber Open and part of the ATP World Tour 500 series of the 2015 ATP World Tour. It took place at the Gerry Weber Stadion in Halle, Germany, between 15 and 21 June 2015.
The 2015 Western & Southern Open was a men's and women's tennis tournament played on outdoor hard courts August 15–23, 2015. It was part of the ATP World Tour Masters 1000 of the 2015 ATP World Tour and of the WTA Premier 5 tournaments of the 2015 WTA Tour, as well as a 2015 US Open Series event. The 2015 tournament was the men's 114th edition and the women's 87th edition of the Cincinnati Masters. The tournament is held annually at the Lindner Family Tennis Center in Mason, Ohio, United States.
The 2016 Open 13 Provence was a men's tennis tournament played on indoor hard courts. It was the 23rd edition of the Open 13, and part of the ATP World Tour 250 series of the 2016 ATP World Tour. It took place at the Palais des Sports in Marseille, France, from 15 February through 21 February 2016. Unseeded Nick Kyrgios won the singles title.
The 2016 U.S. Men's Clay Court Championships was a tennis tournament played on outdoor clay courts. It was the 48th edition of the U.S. Men's Clay Court Championships, and an ATP World Tour 250 event on the 2016 ATP World Tour. It took place at River Oaks Country Club in Houston, Texas, United States, from April 4 through April 10, 2016.
The 2016 Gerry Weber Open was a men's tennis tournament played on outdoor grass courts. It was the 24th edition of the event and part of the ATP World Tour 500 series of the 2016 ATP World Tour. It took place at the Gerry Weber Stadion in Halle, Germany, between 13 June and 19 June 2016. Unseeded Florian Mayer won the singles title
The 2017 Gerry Weber Open was a men's tennis tournament played on outdoor grass courts. It was the 25th edition of the tournament and part of the ATP World Tour 500 series of the 2017 ATP World Tour. It took place at the Gerry Weber Stadion in Halle, Germany, between 19 June and 25 June 2017. First-seeded Roger Federer won the singles title, his ninth at the event.
The 2018 Gerry Weber Open was a men's tennis tournament played on outdoor grass courts. It was the 26th edition of the event and part of the ATP World Tour 500 series of the 2018 ATP World Tour. It took place at the Gerry Weber Stadion in Halle, Germany, between 18 June and 24 June 2018. Unsedeed Borna Ćorić won the singles title.
The 2019 Halle Open was a tennis tournament played on outdoor grass courts. It was the 27th edition of the Halle Open and part of the ATP Tour 500 series of the 2019 ATP Tour. It took place at the Gerry Weber Stadion in Halle, Germany, between 17 June and 23 June 2019.
Tommy Haas 
Aisam-ul-Haq Qureshi / 
Jean-Julien Rojer 
