![US Open 2021: Oldie Karlovic and Youngster Rune after qualifying against Rublev and Djokovic · tennisnet.com US Open 2021: Oldie Karlovic and Youngster Rune after qualifying against Rublev and Djokovic · tennisnet.com](https://www.tennisnet.com/fileadmin/_processed_/9/2/csm_quali-karlovic_f8c49f7c15.jpg)
US Open 2021: Oldie Karlovic and Youngster Rune after qualifying against Rublev and Djokovic · tennisnet.com
![Fabio Fognini from Italy serves the ball to Ivo Karlovic, of Croatia during the Qatar ATP Open Tennis tournament in Doha, Qatar, Monday, Jan. 4, 2010. Ivo Karlovic won 6-4, 6-4. (AP Fabio Fognini from Italy serves the ball to Ivo Karlovic, of Croatia during the Qatar ATP Open Tennis tournament in Doha, Qatar, Monday, Jan. 4, 2010. Ivo Karlovic won 6-4, 6-4. (AP](https://l450v.alamy.com/450v/2nehn06/ivo-karlovic-of-croatia-serves-the-ball-to-fabio-fognini-from-italy-during-the-qatar-atp-open-tennis-tournament-in-doha-qatar-monday-jan-4-2010-ivo-karlovic-won-6-4-6-4-ap-photohassan-ammar-2nehn06.jpg)
Fabio Fognini from Italy serves the ball to Ivo Karlovic, of Croatia during the Qatar ATP Open Tennis tournament in Doha, Qatar, Monday, Jan. 4, 2010. Ivo Karlovic won 6-4, 6-4. (AP
![Croatia's Ivo Karlovic returns the ball to Czech Republic's Jan Hernych during the Italian Rome Masters tennis tournament, in Rome, Monday, April 27, 2009. (AP Photo/Felice Calabro' Stock Photo - Alamy Croatia's Ivo Karlovic returns the ball to Czech Republic's Jan Hernych during the Italian Rome Masters tennis tournament, in Rome, Monday, April 27, 2009. (AP Photo/Felice Calabro' Stock Photo - Alamy](https://c8.alamy.com/comp/2P8HPC7/croatias-ivo-karlovic-returns-the-ball-to-czech-republics-jan-hernych-during-the-italian-rome-masters-tennis-tournament-in-rome-monday-april-27-2009-ap-photofelice-calabro-2P8HPC7.jpg)
Croatia's Ivo Karlovic returns the ball to Czech Republic's Jan Hernych during the Italian Rome Masters tennis tournament, in Rome, Monday, April 27, 2009. (AP Photo/Felice Calabro' Stock Photo - Alamy
![Ivo Karlovic and Ernests Gulbis are in action at the Erste Bank Open in Vienna | Tennis News | Sky Sports Ivo Karlovic and Ernests Gulbis are in action at the Erste Bank Open in Vienna | Tennis News | Sky Sports](https://e0.365dm.com/15/10/2048x1152/tennis-ivo-karlovic-shanghai_3365820.jpg)
Ivo Karlovic and Ernests Gulbis are in action at the Erste Bank Open in Vienna | Tennis News | Sky Sports
![Croatia's Ivo Karlovic celebrates after winning the second set against Italy's Thomas Fabbiano in a Men's singles match during day three of the Wimbledon Tennis Championships in London, Wednesday, July 3, 2019. ( Croatia's Ivo Karlovic celebrates after winning the second set against Italy's Thomas Fabbiano in a Men's singles match during day three of the Wimbledon Tennis Championships in London, Wednesday, July 3, 2019. (](https://c8.alamy.com/comp/2MJKD0G/croatias-ivo-karlovic-celebrates-after-winning-the-second-set-against-italys-thomas-fabbiano-in-a-mens-singles-match-during-day-three-of-the-wimbledon-tennis-championships-in-london-wednesday-july-3-2019-ap-photokirsty-wigglesworth-2MJKD0G.jpg)
Croatia's Ivo Karlovic celebrates after winning the second set against Italy's Thomas Fabbiano in a Men's singles match during day three of the Wimbledon Tennis Championships in London, Wednesday, July 3, 2019. (
![Fabio Fognini from Italy serves the ball to Ivo Karlovic, of Croatia during the Qatar ATP Open Tennis tournament in Doha, Qatar, Monday, Jan. 4, 2010. Ivo Karlovic won 6-4, 6-4. (AP Fabio Fognini from Italy serves the ball to Ivo Karlovic, of Croatia during the Qatar ATP Open Tennis tournament in Doha, Qatar, Monday, Jan. 4, 2010. Ivo Karlovic won 6-4, 6-4. (AP](https://l450v.alamy.com/450v/2nehn0c/ivo-karlovic-of-croatia-serves-the-ball-to-fabio-fognini-from-italy-during-the-qatar-atp-open-tennis-tournament-in-doha-qatar-monday-jan-4-2010-ivo-karlovic-won-6-4-6-4-ap-photohassan-ammar-2nehn0c.jpg)
Fabio Fognini from Italy serves the ball to Ivo Karlovic, of Croatia during the Qatar ATP Open Tennis tournament in Doha, Qatar, Monday, Jan. 4, 2010. Ivo Karlovic won 6-4, 6-4. (AP
![Australian Open tennis: Ivo Karlovic crashes out, Carla Suarez Navarro advances | Tennis News - Hindustan Times Australian Open tennis: Ivo Karlovic crashes out, Carla Suarez Navarro advances | Tennis News - Hindustan Times](https://images.hindustantimes.com/rf/image_size_630x354/HT/p2/2018/01/19/Pictures/tennis-aus-open_79d77510-fd01-11e7-a1cf-7dff4aec86fa.jpg)
Australian Open tennis: Ivo Karlovic crashes out, Carla Suarez Navarro advances | Tennis News - Hindustan Times
![Croatia's Ivo Karlovic reacts after winning the fourth set against Italy's Andreas Seppi during their third round match at the Australian Open tennis championships in Melbourne, Australia, Friday, Jan. 19, 2018. (AP Croatia's Ivo Karlovic reacts after winning the fourth set against Italy's Andreas Seppi during their third round match at the Australian Open tennis championships in Melbourne, Australia, Friday, Jan. 19, 2018. (AP](https://c8.alamy.com/comp/2MP6BYX/croatias-ivo-karlovic-reacts-after-winning-the-fourth-set-against-italys-andreas-seppi-during-their-third-round-match-at-the-australian-open-tennis-championships-in-melbourne-australia-friday-jan-19-2018-ap-photoandy-brownbill-2MP6BYX.jpg)