Fourth seed Nikolay Davydenko threw away a two-set lead before going down 4-6, 2-6, 6-2, 6-2, 6-4 to Croatian Ivan Ljubicic in the third round of the French Open on Saturday. Ljubicic, seeded 28th, will next face France's Gael Monfils, who beat Austrian Juergen Melzer.
The Wimbledon champion was dumped by the world No. 47 in the second round of the Swiss Indoors.
World No 7 Fernando Gonzalez stayed on course for his first title of the year a quarter-final victory over South Korea's Lee Hyung-taik at the China Open.
The world No 5 Croatian defeated British No 1 Andy Murray in the final.
Top seed Nikolay Davydenko of Russia and second-seeded Croatian Ivan Ljubicic progressed into the second round of the $1 million Qatar Open in contrasting fashions on Tuesday.
Croatian Ivan Ljubicic grabbed the last ticket to the eight-strong Masters Cup on Friday.
Croatian Ivan Ljubicic captured his first ATP title in two years when he dismissed France's Michael Llodra 7-5, 6-3 in the final of the Lyon Grand Prix on Sunday.
Nadal will equal world number one Roger Federer's haul of four Masters Series titles this year if he beats Ljubicic.
Home hope Andy Murray battled through to the last 16 at Wimbledon with a nervy 6-4, 4-6, 6-1, 7-6 win over imposing Croatian Ivan Ljubicic under the Centre Court roof on Friday.
Britain's Andy Murray knocked out top-seeded Russian Nikolay Davydenko 7-5 6-2 on Friday to set up a final meeting with Croatian Ivan Ljubicic at the $1 million Qatar Open.
Croatian top seed Ivan Ljubicic beat Russia's Mikhail Youzhny 2-6 6-3 7-5 on Saturday to set up a final with second seeded Cypriot Marcos Baghdatis in the Zagreb Open.
Top seed Ivan Ljubicic was the only seed to reach the quarter-finals of the Zagreb indoor tournament
Ivan Ljubicic and Nikolay Davydenko advanced to the quarterfinals of the China Open.
Roger Federer swept aside Spain's David Ferrer 6-1, 6-4 in Nasdaq-100 Open semi-final
The towering Croatian, who has won 20 of his last 22 matches, will meet the unfancied Tomas Berdych in the Paris Masters final.
The second-seeded Cypriot, who earned his third career victory over Ljubicic, had to work hard for every point in the two-and-a-half-hour final.
Top seed Ivan Ljubicic won his third title of the year by beating fifth seed Fernando Gonzalez of Chile 6-3, 6-4, 7-5 in the Vienna Open final on Sunday.
Top seed Rafa Nadal moved into the semi-finals of the Shanghai Masters on Friday when Ivan Ljubicic became the eighth player to retire from the $3.24 million tournament. The Spanish world number two had just evened the match up at 3-6, 6-3 when 30-year-old Ljubicic, who had already had treatment on his left thigh, decided he could no longer continue.
Carlos Moya has confirmed his participation for the Chennai Open in January.
Croatian beanpole Ivo Karlovic upset top-seeded compatriot Ivan Ljubicic to reach the quarter-finals of the grasscourt Nottingham Open on Wednesday.
World number three Novak Djokovic and US Open champion Juan Martin del Potro kicked off their Australian Open preparations with easy first-round wins at the Kooyong Classic in Melbourne on Wednesday. Del Potro cruised to a 6-3, 6-3 victory over Croatian Ivan Ljubicic, before Serbian Djokovic made light work of experienced German Tommy Haas 6-2, 6-3 at the eight-man invitational event.
Swede Robin Soderling is one win away from retaining his World Indoor tournament title after beating Victor Troicki 7-5, 6-4 in the semi-finals on Saturday.
American Andy Roddick defeated the Czech Republic's Tomas Berdych 7-5, 6-4 to win the Sony Ericsson Open on Sunday after an enthralling final.
Novak Djokovic recovered from a set down to defeat fellow Serb Viktor Troicki 3-6, 6-4, 6-2 in the second round of the Dubai Championships on Wednesday, while India's Somdev Devvarman lost to Cypriot Marcos Baghdatis.
World number one Rafael Nadal and fourth seed Andy Murray bagged two wins apiece on Friday to set up a mouth-watering Monte Carlo Masters semi-final. Nadal, gunning for his fifth consecutive title in the principality, swept past Croatian Ivan Ljubicic 6-3 6-3 in his quarter-final while Murray battled past Russian eighth seed Nikolay Davydenko 7-6 6-4.
Second seed Nadal outfought Argentine Juan Ignacio Chela 7-5 7-5 and third seed Roddick overcame Croatian Ivan Ljubicic 7-6 7-6.
Andre Agassi beat Spain's Tommy Robredo while Marat Safin knocked out Peruvian Luis Horna at the Madrid Masters.
Playing his first match after a three-month injury layoff, a patched-up Tim Henman was humbled 6-4 6-2 by Croatian Ivan Ljubicic in the first round of the World Indoor Tournament on Tuesday.
Ivan Ljubicic said he was reserving judgement on proposed round robin play at ATP tournaments next year.
The 20-time Grand Slam champion is yet to clarify his schedule for next year but has committed to playing the Australian Open.
The American powered past a below-par Ivan Ljubicic in less than an hour to win the Thailand Open.
Federer is tied with Rafael Nadal and Novak Djokovic in the race to be the most successful men's singles Grand Slam champion of all time and Australian Open organisers would have been hoping to have all three at Melbourne Park.
Rafa Nadal said he was not playing well enough to lift the French Open title despite breezing past Ivan Ljubicic in their fourth-round match on Monday.
Ivan Ljubicic and Mario Ancic beat Slovakian duo Dominik Hrbaty and Michal Mertinak in the doubles to give Croatia a 2-1 lead in the Davis Cup final.
Roger Federer has rejigged his coaching team for next year by parting company with Stefan Edberg and bringing Ivan Ljubicic on board, the 17-time Grand Slam champion said on Wednesday.
The Russian Mikhail Youzhny brushed aside third seed Ivan Ljubicic to win the World Indoor tournament.
The world number one swept aside Spain's David Ferrer in the Nasdaq-100 Open semi-final and set up a clash with Ivan Ljubicic.