Stefan Koubek is a retired tennis player from Austria. Koubek played left-handed with a double-handed backhand. His idol when growing up was Thomas Muster. Koubek won three titles, two of which came on hardcourts; despite this, he said his favorite surface was clay.
The 2007 Chennai Open was a men's tennis tournament played on outdoor hard courts at the SDAT Tennis Stadium in Chennai in India and was part of the International Series of the 2007 ATP Tour. The tournament ran from 1 January through 8 January 2007. Third-seeded Xavier Malisse won the singles title.
The 1994 Qatar Open, known as the 1994 Qatar Mobil Open for sponsorship reasons, was an ATP men's tennis tournament held in Doha, Qatar. It was the second edition of the tournament and was held from 3 January until 10 January 1994. Third-seeded Stefan Edberg won his first title of the year and the 39th of his career.
The 2008 Qatar Open, known as the 2008 Qatar ExxonMobil Open, for sponsorship reasons, was a tennis tournament played on outdoor hard courts. It was the 16th edition of the Qatar ExxonMobil Open, and was part of the International Series of the 2008 ATP Tour. It took place at the Khalifa International Tennis Complex in Doha, Qatar, from 31 December 2007 through 5 January 2008.
The 1995 Qatar Open, known as the 1995 Qatar Mobil Open for sponsorship reasons, was a men's tennis ATP tournament held in Doha, Qatar and played on outdoor hard courts. The event was part of the World Series of the 1995 ATP Tour. It was the third edition of the tournament and was held from 2 January through 9 January 1995.
The 1999 Qatar Open, known as the 1999 Qatar Mobil Open, for sponsorship reasons, was a men's tennis tournament held in Doha, Qatar and part of the World Series of the 1999 ATP Tour. It was the seventh edition of the tournament and was played on hard court and was held from 4 January through 11 January 1999. Unseeded Rainer Schüttler, who entered the draw as a qualifier, won the singles title.
The 2000 Qatar Open, known as the 2000 Qatar ExxonMobil Open for sponsorship reasons, was a men's tennis tournament held in Doha, Qatar and played on outdoor hard courts. The event was part of the International Series of the 2000 ATP Tour. It was the eighth edition of the tournament and was held from 3 January through 10 January 2000. Third-seeded Fabrice Santoro won the singles title.
The 2002 Qatar Open, known as the 2002 Qatar ExxonMobil Open, for sponsorship reasons, was a men's tennis tournament played on outdoor hard courts at the Khalifa International Tennis Complex in Doha, Qatar and was part of the International Series of the 2002 ATP Tour. The tournament ran from 31 December 2001 through 5 January 2002. Sixth-seeded Younes El Aynaoui won the singles title.
The 2004 Qatar Open, known as the 2004 Qatar ExxonMobil Open, for sponsorship reasons, was a tennis tournament played on outdoor hard courts at the Khalifa International Tennis Complex in Doha in Qatar and was part of the International Series of the 2004 ATP Tour. The tournament ran from 5 January through 11 January 2004. Unseeded Nicolas Escudé, who entered the main draw on a wildcard, won the singles title.
The 2000 Citrix Tennis Championships was an ATP men's tennis tournament held in Delray Beach, Florida, USA and was part of the International Series of the 2000 ATP Tour. The tournament was held from February 28 to March 6, 2000. Sixth-seeded Stefan Koubek won the singles title.
The 2010 Qatar Open, known as the 2010 Qatar ExxonMobil Open for sponsorship reasons, was a men's tennis tournament played on outdoor hard courts. It was the 18th edition of the Qatar ExxonMobil Open, and part of the ATP World Tour 250 series of the 2010 ATP World Tour. It took place at the Khalifa International Tennis Complex in Doha, Qatar, from 4 January through 9 January 2010. Third-seeded Nikolay Davydenko won the singles title.
The 2011 Qatar Open, known as the 2011 Qatar ExxonMobil Open for sponsorship reasons, was a men's tennis tournament played on outdoor hard courts. It was the 19th edition of the Qatar Open, and part of the ATP World Tour 250 series of the 2011 ATP World Tour. It took place at the Khalifa International Tennis Complex in Doha, Qatar, from 3 January through 8 January 2011. Roger Federer won the singles title.
The 2012 Qatar Open was a men's tennis tournament played on outdoor hard courts. It was the 20th edition of the Qatar Open, and part of the ATP World Tour 250 series of the 2012 ATP World Tour. It took place at the Khalifa International Tennis and Squash Complex in Doha, Qatar, from January 2 through January 7, 2012. Jo-Wilfried Tsonga won the singles title.
The 2014 Qatar Open was a men's tennis tournament that was played on outdoor hard courts. It was the 22nd edition of the Qatar Open, and part of the ATP World Tour 250 series of the 2014 ATP World Tour. It took place at the Khalifa International Tennis and Squash Complex in Doha, Qatar, from 30 December 2013 until 5 January 2014. First-seeded Rafael Nadal won the singles title.
The 2006 Austrian Open was men's tennis tournament played on outdoor clay courts. It was the 36th edition of the Austrian Open, and was part of the International Series Gold of the 2006 ATP Tour. It took place at the Kitzbühel Sportpark Tennis Stadium in Kitzbühel, Austria, from 24 July through 30 July 2006. Ninth-seeded Agustín Calleri won the singles title.
The 2015 Qatar Open was a men's tennis tournament played on outdoor hard courts. It was the 23rd edition of the Qatar Open, and part of the ATP World Tour 250 series of the 2015 ATP World Tour. It took place at the Khalifa International Tennis and Squash Complex in Doha, Qatar from 5 January 5 until 11 January 2015. Fourth-seeded David Ferrer won the singles title.
The 2016 Qatar Open was a men's tennis tournament played on outdoor hard courts. It was the 24th edition of the Qatar Open, and part of the ATP World Tour 250 series of the 2016 ATP World Tour. It took place at the Khalifa International Tennis and Squash Complex in Doha, Qatar, from 4 January until 9 January 2016. First-seeded Novak Djokovic won the singles title.
The 2017 Qatar Open was a men's tennis tournament played on outdoor hard courts. It was the 25th edition of the Qatar Open, and part of the ATP World Tour 250 series of the 2017 ATP World Tour. It took place at the Khalifa International Tennis and Squash Complex in Doha, Qatar, from 2 January until 7 January 2017. Second-seeded Novak Djokovic won his second consecutive singles title at the event.
The 2019 Qatar Open was a men's tennis tournament played on outdoor hard courts. It was the 27th edition of the Qatar Open, and part of the ATP Tour 250 series of the 2019 ATP Tour. It took place at the Khalifa International Tennis and Squash Complex in Doha, Qatar, from 31 December 2018 until 5 January 2019. Seventh-seeded Roberto Bautista Agut won the singles title.
The 2021 Qatar Open was the 29th edition of the Qatar Open, a men's tennis tournament which is played on outdoor hard courts. It was part of the ATP Tour 250 of the 2021 ATP Tour. It took place at the Khalifa International Tennis and Squash Complex in Doha, Qatar from 8 to 14 March 2021. The tournament was awarded the Tournament of the Year award in the 250 category from the 2019 ATP Awards for the third time in five years.
Stefan Koubek [1] 
Martin Damm / 
