![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
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French Open 2019: Ivo Karlovic and Feliciano Lopez serve up oldest match in French Open history - Eurosport
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Ivo Karlovic becomes oldest ATP winner in 37 years with success in Rhode Island | Tennis News | Sky Sports
![Ivo Karlovic, of Croatia, serves to Andrey Rublev, of Russia, during the first round of the US Open tennis championships, Monday, Aug. 30, 2021, in New York. (AP Photo/John Minchillo Stock Photo - Ivo Karlovic, of Croatia, serves to Andrey Rublev, of Russia, during the first round of the US Open tennis championships, Monday, Aug. 30, 2021, in New York. (AP Photo/John Minchillo Stock Photo -](https://c8.alamy.com/comp/2MDPBNC/ivo-karlovic-of-croatia-serves-to-andrey-rublev-of-russia-during-the-first-round-of-the-us-open-tennis-championships-monday-aug-30-2021-in-new-york-ap-photojohn-minchillo-2MDPBNC.jpg)