The story of Ivo Karlovic often feels under-addressed in tennis. For one, the Croat, freshly 40 years old, possesses perhaps the most-feared serve in the professional game, frequently cited by his ...

American tennis player Reilly Opelka, joint-tallest on the ATP Tour, faced Carlos Alcaraz at the US Open. Known for his ...

In the midst of his Davis Cup celebrations, Roger Federer makes a very Swiss pit stop, Andy Murray opens up the floodgates, and Ivo Karlovic gets sassy in his Twitter Q&A. Here are some of the ...

Rajeev Ram celebrates after defeating Ivo Karlovic, of Croatia, in the Tennis Hall of Fame Championship final in Newport, R.I., Sunday, July 19, 2015. (AP Photo/Michael Dwyer)(The Associated Press) ...

Bashing 39 aces to match his age, Ivo Karlovic became the oldest man to win a match at the Australian Open in over 40 years as he felled Poland's Hubert Hurkacz, a man 18 years his junior, to ...

Ivo Karlovic blasts a serve down the line. As Arnaud Clement fails to touch the ball, Ivo shakes his fist and turns to the service clock_ 153 MPH_ he's tied the record. He's rewarded with and ...

Ivo Karlovic is 37 years old, but he clearly still has some gas left in the tank. A 2½-hour match is par for the course at majors, but what about a 2½-hour set? That's how long it took Karlovic ...

Roger Federer will make short work of a tall opponent in his third-round matchup with 6'10" Croatian Ivo Karlovic at the Australian Open. Federer advanced past his second-round match without ...

The towering 6-foot-11 Croatian breaks American Steve Johnson twice in straight sets win while frenchman Gael Monfils blisters Alexander Zverev.

HALLE, Germany (AP) — Ivo Karlovic fired a record 45 aces in upsetting the third-seeded Tomas Berdych 7-5, 6-7 (8), 6-3 to advance to the Gerry Weber Open semifinals on Friday.