![Ivo Karlovic, of Croatia, celebrates after upsetting Roger Federer, of Switzerland, during a match at the Western & Southern Financial Group Masters tennis tournament, Thursday, July 31, 2008, in Mason, Ohio. Karlovic Ivo Karlovic, of Croatia, celebrates after upsetting Roger Federer, of Switzerland, during a match at the Western & Southern Financial Group Masters tennis tournament, Thursday, July 31, 2008, in Mason, Ohio. Karlovic](https://c8.alamy.com/comp/2P9TKM8/ivo-karlovic-of-croatia-celebrates-after-upsetting-roger-federer-of-switzerland-during-a-match-at-the-western-southern-financial-group-masters-tennis-tournament-thursday-july-31-2008-in-mason-ohio-karlovic-won-7-6-8-4-6-7-6-7-ap-photodavid-kohl-2P9TKM8.jpg)
Ivo Karlovic, of Croatia, celebrates after upsetting Roger Federer, of Switzerland, during a match at the Western & Southern Financial Group Masters tennis tournament, Thursday, July 31, 2008, in Mason, Ohio. Karlovic
![Maharashtra Open 2019: Serve-and-volleying Ivo Karlovic stands test of time | Tennis News - The Indian Express Maharashtra Open 2019: Serve-and-volleying Ivo Karlovic stands test of time | Tennis News - The Indian Express](https://images.indianexpress.com/2019/01/ivo-karlovic-1.jpg)
Maharashtra Open 2019: Serve-and-volleying Ivo Karlovic stands test of time | Tennis News - The Indian Express
![Interview: Ivo Karlovic, 39-year-old tennis veteran, on his YouTube lessons, Twitter humour and more Interview: Ivo Karlovic, 39-year-old tennis veteran, on his YouTube lessons, Twitter humour and more](https://s01.sgp1.cdn.digitaloceanspaces.com/article/109930-wpesrbfsev-1546770507.jpg)
Interview: Ivo Karlovic, 39-year-old tennis veteran, on his YouTube lessons, Twitter humour and more
![Happy 41st Birthday to one of the greatest servers tennis has ever seen, Dr. Ivo Karlovic! : r/tennis Happy 41st Birthday to one of the greatest servers tennis has ever seen, Dr. Ivo Karlovic! : r/tennis](https://external-preview.redd.it/Kg_m2F7YjRyOYbzzXOYc4Yo8KMpHSZnzBkAYAq8CAKM.jpg?auto=webp&s=66d555fa2fe64dff39ff5db8aad4c0e1adb10d1d)
Happy 41st Birthday to one of the greatest servers tennis has ever seen, Dr. Ivo Karlovic! : r/tennis
![Ivo Karlovic of Croatia returns a shot during his tennis match against John Isner of the United States during the U.S. Men's Clay Court Championships at River Oaks Country Club on Friday Ivo Karlovic of Croatia returns a shot during his tennis match against John Isner of the United States during the U.S. Men's Clay Court Championships at River Oaks Country Club on Friday](https://c8.alamy.com/comp/2P77NF4/ivo-karlovic-of-croatia-returns-a-shot-during-his-tennis-match-against-john-isner-of-the-united-states-during-the-us-mens-clay-court-championships-at-river-oaks-country-club-on-friday-april-8-2011-in-houston-texas-karlovic-won-7-6-2-6-7-2-7-6-9-ap-photoaaron-m-sprecher-2P77NF4.jpg)
Ivo Karlovic of Croatia returns a shot during his tennis match against John Isner of the United States during the U.S. Men's Clay Court Championships at River Oaks Country Club on Friday
![French Open 2019: Ivo Karlovic and Feliciano Lopez serve up oldest match in French Open history - Eurosport French Open 2019: Ivo Karlovic and Feliciano Lopez serve up oldest match in French Open history - Eurosport](https://imgresizer.eurosport.com/unsafe/2560x1440/filters:format(jpeg)/origin-imgresizer.eurosport.com/2019/05/28/2599321-53885130-2560-1440.jpg)