![Daniel Koellerer of Austria smashes his racket and receives a warning for misuse during his Vienna Open second round tennis match against Feliciano Lopez of Spain October 29, 2009. REUTERS/Heinz-Peter Bader (AUSTRIA Daniel Koellerer of Austria smashes his racket and receives a warning for misuse during his Vienna Open second round tennis match against Feliciano Lopez of Spain October 29, 2009. REUTERS/Heinz-Peter Bader (AUSTRIA](https://c8.alamy.com/comp/2E7C21D/daniel-koellerer-of-austria-smashes-his-racket-and-receives-a-warning-for-misuse-during-his-vienna-open-second-round-tennis-match-against-feliciano-lopez-of-spain-october-29-2009-reutersheinz-peter-bader-austria-sport-tennis-2E7C21D.jpg)
Daniel Koellerer of Austria smashes his racket and receives a warning for misuse during his Vienna Open second round tennis match against Feliciano Lopez of Spain October 29, 2009. REUTERS/Heinz-Peter Bader (AUSTRIA
![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
![Austria's Daniel Koellerer after his match against Argentina's Diego Junqueira after the second round match of the Austrian Open tennis tournament in Kitzbuehel, Austria, on Wednesday, May 20, 2009. Koellerer won 6-1 Austria's Daniel Koellerer after his match against Argentina's Diego Junqueira after the second round match of the Austrian Open tennis tournament in Kitzbuehel, Austria, on Wednesday, May 20, 2009. Koellerer won 6-1](https://c8.alamy.com/comp/2P8F12X/austrias-daniel-koellerer-after-his-match-against-argentinas-diego-junqueira-after-the-second-round-match-of-the-austrian-open-tennis-tournament-in-kitzbuehel-austria-on-wednesday-may-20-2009-koellerer-won-6-1-and-6-2-ap-photokerstin-joensson-2P8F12X.jpg)