![Lukasz Kubot from Poland returns the ball to Austria's Juergen Melzer at the ATP BA-CA tennis trophy in Vienna, on Thursday, Oct. 12, 2006. (AP Photo/Hans Punz Stock Photo - Alamy Lukasz Kubot from Poland returns the ball to Austria's Juergen Melzer at the ATP BA-CA tennis trophy in Vienna, on Thursday, Oct. 12, 2006. (AP Photo/Hans Punz Stock Photo - Alamy](https://c8.alamy.com/comp/2PCEYW7/lukasz-kubot-from-poland-returns-the-ball-to-austrias-juergen-melzer-at-the-atp-ba-ca-tennis-trophy-in-vienna-on-thursday-oct-12-2006-ap-photohans-punz-2PCEYW7.jpg)
Lukasz Kubot from Poland returns the ball to Austria's Juergen Melzer at the ATP BA-CA tennis trophy in Vienna, on Thursday, Oct. 12, 2006. (AP Photo/Hans Punz Stock Photo - Alamy
![Austria's Juergen Melzer returns the ball to Lukasz Kubot from Poland at the ATP BA-CA tennis trophy in Vienna, on Thursday, Oct. 12, 2006. (AP Photo/Hans Punz Stock Photo - Alamy Austria's Juergen Melzer returns the ball to Lukasz Kubot from Poland at the ATP BA-CA tennis trophy in Vienna, on Thursday, Oct. 12, 2006. (AP Photo/Hans Punz Stock Photo - Alamy](https://c8.alamy.com/comp/2PCEYW5/austrias-juergen-melzer-returns-the-ball-to-lukasz-kubot-from-poland-at-the-atp-ba-ca-tennis-trophy-in-vienna-on-thursday-oct-12-2006-ap-photohans-punz-2PCEYW5.jpg)
Austria's Juergen Melzer returns the ball to Lukasz Kubot from Poland at the ATP BA-CA tennis trophy in Vienna, on Thursday, Oct. 12, 2006. (AP Photo/Hans Punz Stock Photo - Alamy
![Lukasz Kubot of Poland and Marcelo Melo of Brazil return to Wesley Koolhof of the Netherlands and Nikola Mektic of Croatia during their doubles tennis match at the ATP World Finals tennis Lukasz Kubot of Poland and Marcelo Melo of Brazil return to Wesley Koolhof of the Netherlands and Nikola Mektic of Croatia during their doubles tennis match at the ATP World Finals tennis](https://c8.alamy.com/comp/2MFK5PA/lukasz-kubot-of-poland-and-marcelo-melo-of-brazil-return-to-wesley-koolhof-of-the-netherlands-and-nikola-mektic-of-croatia-during-their-doubles-tennis-match-at-the-atp-world-finals-tennis-tournament-at-the-o2-arena-in-london-thursday-nov-19-2020-ap-photofrank-augstein-2MFK5PA.jpg)
Lukasz Kubot of Poland and Marcelo Melo of Brazil return to Wesley Koolhof of the Netherlands and Nikola Mektic of Croatia during their doubles tennis match at the ATP World Finals tennis
![ATP Tour on Twitter: "History for Lukasz Kubot! The 35-year-old is the first player from 🇵🇱 to climb to the top of the ATP Rankings in singles or doubles. Congrats! ➡️ https://t.co/5xTm2vq7nO ATP Tour on Twitter: "History for Lukasz Kubot! The 35-year-old is the first player from 🇵🇱 to climb to the top of the ATP Rankings in singles or doubles. Congrats! ➡️ https://t.co/5xTm2vq7nO](https://pbs.twimg.com/media/DTGuVj3WkAAMEvF.jpg)
ATP Tour on Twitter: "History for Lukasz Kubot! The 35-year-old is the first player from 🇵🇱 to climb to the top of the ATP Rankings in singles or doubles. Congrats! ➡️ https://t.co/5xTm2vq7nO
![Lukasz Kubot, Marcelo Melo Secure Nitto ATP Finals Spot For Fourth Straight Year | ATP Tour | Tennis Lukasz Kubot, Marcelo Melo Secure Nitto ATP Finals Spot For Fourth Straight Year | ATP Tour | Tennis](https://www.atptour.com/en/news/www.atptour.com/-/media/images/news/2020/11/06/20/45/kubot-melo-nitto-atp-finals-qualification-20202.jpg)