Huge test for Twitter legend Karlovic

Updated: January 19, 2012, 10:12 PM ET
By Ravi Ubha | ESPN.com

MELBOURNE, Australia -- With remarks such as, "Finally arrived down under, after 14 hrs on the plane I got to wash thoroughly down under," Ivo Karlovic has acquired quite the following on Twitter.

To be more precise, as of Thursday afternoon in Melbourne, he had more than 23,000 followers.

"I think that for my ranking it's a lot," quipped Karlovic, the world No. 57.

The soft-spoken, 6-foot-10 Karlovic will likely attract a few more if he beats Roger Federer in the third ...

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