Defending champ Cilic reaches semis

Defending champion Marin Cilic won in straight sets against fellow Croatian Ivo Karlovic to reach the semifinals at the Zagreb Indoors.

Cilic beats Koellerer to advance

Defending champion Marin Cilic cruised into the quarterfinals of the Zagreb Indoors by defeating Daniel Koellerer of Austria 6-2, 6-1.

Cilic, Ljubicic, Karlovic, Melzer advance

Defending champion Marin Cilic beat Jan Hajek of the Czech Republic 6-2, 6-2 in a first-round match at the Zagreb Indoors.

Seven a lucky number for only a select few

...Despite being tired, the 6-foot-9 Isner, a better athlete than 6-foot-10 Croat Ivo Karlovic, still got to the fourth round by upsetting 12th-seeded Frenchman Gael Monfils. The 33rd seed...

Jan 24, 2010; Melbourne, AUSTRALIA; Rafael Nadal (ESP) serves against Ivo Karlovic (CRO) on day seven of the 2010 Australian Open in Melbourne Park. Nadal won 6-4...

Here's who is going to win the Australian Open

...champion is gaining in confidence, boosted by wins over the dangerous duo of Philipp Kohlschreiber and Ivo Karlovic. He worked extremely hard in the offseason and has something to prove given how 2009 ended...

Time is now for Murray to win Slam

Perhaps it's an overstatement to call Andy Murray's match against Rafael Nadal a moment of truth for the Scot. But it's close.

Cilic looking to be next giant killer

Andy Roddick can't seem to escape the game's pre-eminent sluggers. Does he have enough to get by Marin Cilic?

Rafael Nadal of Spain celebrates winning a point against Ivo Karlovic of Croatia in their men's singles fourth round match on day seven of the Australian...

Roddick tops Gonzalez; del Potro falls

Andy Roddick overcame 2007 Australian Open finalist Fernando Gonzalez of Chile 6-3, 3-6, 4-6, 7-5, 6-2 on Sunday, surviving to earn a berth in the Australian Open's quarterfinals.

Croatian tennis player Ivo Karlovic plays a backhand return during his men's singles match against compatriot Ivan Ljubicic on the...

Reasons aplenty for Nadal to be nervous

No one enjoys playing Ivo Karlovic. Just ask Rafael Nadal, who knows openings versus his behemoth foe are far and few between.

Federer, Djokovic advance

Top-seeded Roger Federer won his third-round match at the Australian Open, beating Spain's Albert Montanes 6-3, 6-4, 6-4 for his 50th career victory at Melbourne Park.

At This Hour, 9a ET: The Collapse, The Wagon, The Superstitions

...defeats Philipp Kohlschreiber of Germany 6-4, 6-2, 2-6, 7-5. Nadal will face Ivo Karlovic next. Meanwhile, on the women's side, the much-anticipated quarterfinal between fellow Belgian comebackers Justine...

Nadal needs fourth set in Melbourne

Defending champion Rafael Nadal advanced to the fourth round Friday along with Andy Murray, U.S. Open champion Juan Martin del Potro, Andy Roddick and Fernando Gonzalez.