![Austria's Koellerer eyes the ball during a first round match against Tabara of the Czech Republic at the Kitzbuehel Open tennis tournament in Austria. Austria's Daniel Koellerer eyes the ball during a Austria's Koellerer eyes the ball during a first round match against Tabara of the Czech Republic at the Kitzbuehel Open tennis tournament in Austria. Austria's Daniel Koellerer eyes the ball during a](https://c8.alamy.com/comp/2D42JFR/austrias-koellerer-eyes-the-ball-during-a-first-round-match-against-tabara-of-the-czech-republic-at-the-kitzbuehel-open-tennis-tournament-in-austria-austrias-daniel-koellerer-eyes-the-ball-during-a-first-round-match-against-michal-tabara-of-the-czech-republic-at-the-kitzbuehel-open-tennis-tournament-in-austria-july-26-2005-koeller-won-7-6-3-6-6-4-reutersdominic-ebenbichler-2D42JFR.jpg)
Austria's Koellerer eyes the ball during a first round match against Tabara of the Czech Republic at the Kitzbuehel Open tennis tournament in Austria. Austria's Daniel Koellerer eyes the ball during a
![Austria's Daniel Koellerer returns the ball to Italy's Potito Starace during their second round match at the ATP Austrian Open tennis tournament in Kitzbuehel July 16, 2008. REUTERS/Dominic Ebenbichler (AUSTRIA Stock Photo - Austria's Daniel Koellerer returns the ball to Italy's Potito Starace during their second round match at the ATP Austrian Open tennis tournament in Kitzbuehel July 16, 2008. REUTERS/Dominic Ebenbichler (AUSTRIA Stock Photo -](https://c8.alamy.com/comp/2E7CTGC/austrias-daniel-koellerer-returns-the-ball-to-italys-potito-starace-during-their-second-round-match-at-the-atp-austrian-open-tennis-tournament-in-kitzbuehel-july-16-2008-reutersdominic-ebenbichler-austria-2E7CTGC.jpg)
Austria's Daniel Koellerer returns the ball to Italy's Potito Starace during their second round match at the ATP Austrian Open tennis tournament in Kitzbuehel July 16, 2008. REUTERS/Dominic Ebenbichler (AUSTRIA Stock Photo -
![Italy's Potito Starace reacts after winning against Austria's Daniel Koellerer during their second round match at the ATP Austrian Open tennis tournament in Kitzbuehel, July 16, 2008. REUTERS/Dominic Ebenbichler (AUSTRIA Stock Photo - Italy's Potito Starace reacts after winning against Austria's Daniel Koellerer during their second round match at the ATP Austrian Open tennis tournament in Kitzbuehel, July 16, 2008. REUTERS/Dominic Ebenbichler (AUSTRIA Stock Photo -](https://c8.alamy.com/comp/2D2KFWC/italys-potito-starace-reacts-after-winning-against-austrias-daniel-koellerer-during-their-second-round-match-at-the-atp-austrian-open-tennis-tournament-in-kitzbuehel-july-16-2008-reutersdominic-ebenbichler-austria-2D2KFWC.jpg)
Italy's Potito Starace reacts after winning against Austria's Daniel Koellerer during their second round match at the ATP Austrian Open tennis tournament in Kitzbuehel, July 16, 2008. REUTERS/Dominic Ebenbichler (AUSTRIA Stock Photo -
![Austria's Daniel Koellerer returns the ball to Brazil's Thomas Belucci during a first round match at the ATP Austrian Open tennis tournament in Kitzbuehel May 18, 2009. REUTERS/Dominic Ebenbichler (AUSTRIA Stock Photo - Austria's Daniel Koellerer returns the ball to Brazil's Thomas Belucci during a first round match at the ATP Austrian Open tennis tournament in Kitzbuehel May 18, 2009. REUTERS/Dominic Ebenbichler (AUSTRIA Stock Photo -](https://c8.alamy.com/comp/2E839AB/austrias-daniel-koellerer-returns-the-ball-to-brazils-thomas-belucci-during-a-first-round-match-at-the-atp-austrian-open-tennis-tournament-in-kitzbuehel-may-18-2009-reutersdominic-ebenbichler-austria-2E839AB.jpg)
Austria's Daniel Koellerer returns the ball to Brazil's Thomas Belucci during a first round match at the ATP Austrian Open tennis tournament in Kitzbuehel May 18, 2009. REUTERS/Dominic Ebenbichler (AUSTRIA Stock Photo -
![Daniel Koellerer of Austria hits a return to Juan Martin Del Potro of Argentina during their match at the U.S. Open tennis championship in New York, September 6, 2009. REUTERS/David Gray (UNITED Daniel Koellerer of Austria hits a return to Juan Martin Del Potro of Argentina during their match at the U.S. Open tennis championship in New York, September 6, 2009. REUTERS/David Gray (UNITED](https://c8.alamy.com/comp/2D2GR4J/daniel-koellerer-of-austria-hits-a-return-to-juan-martin-del-potro-of-argentina-during-their-match-at-the-us-open-tennis-championship-in-new-york-september-6-2009-reutersdavid-gray-united-states-sport-tennis-2D2GR4J.jpg)
Daniel Koellerer of Austria hits a return to Juan Martin Del Potro of Argentina during their match at the U.S. Open tennis championship in New York, September 6, 2009. REUTERS/David Gray (UNITED
![Daniel Koellerer calls ATP a 'mafia organisation' that ruined his life. - "He was of the view that [The Big 4] would never have been treated like he was" : r/tennis Daniel Koellerer calls ATP a 'mafia organisation' that ruined his life. - "He was of the view that [The Big 4] would never have been treated like he was" : r/tennis](https://external-preview.redd.it/sWkrUDJ3sK9vn-wCkKMDFkNhK9Z8_nwHsS712q6g6Jk.jpg?auto=webp&s=f075165a0c1f847a0a3d3bc0630151c54a966006)