Rafael Nadal battled past German Tommy Haas 7-6, 6-3 to reach the Cincinnati Masters quarter-finals.
Roger Federer beat Tomas Berdych in the final in Halle to equal Bjorn Borg's record of 41 wins on the trot on grass
Roger Federer beat Tommy Haas 6-1, 6-3 in the fourth round in Miami.
Lleyton Hewitt breezed into the last four of the Tennis Channel Open with a 6-2, 6-0 win over Philip Kohlschrieber
The world number one was pushed by the Russian but survived to book his place in the last four of the Australian Open against German Nicolas Kiefer.
The German became the first player to enter the final with a 6-4, 6-4 victory over Argentina's Guillermo Coria.
The top seed stormed into the Qatar Open final with a 6-3, 6-3 win over Germany's Tommy Haas.
Haas had earlier defeated Russia's Mikhail Youzhny with an identical 6-4, 6-3 score.
Britain's Tim Henman lost 6-2, 7-6 to German Tommy Haas in the second round of the Qatar Open on Wednesday.
Philipp Kohlschreiber upset world No 4 Nikolay Davydenko to put Germany level after Igor Andreev trounced Germany's No 1 Tommy Haas in the opening rubber.
Russian Nikolay Davydenko saw off Tommy Haas in the U.S. Open quarter-finals for the second successive year, beating the German 6-3 6-3 6-4 on Wednesday to reach the last four without dropping a set.
Spain's Carlos Moya pulled out of next week's Paris Masters on Sunday with a shoulder injury, organisers said.
Second seed Tommy Haas and No 3 Marat Safin were ousted from the Washington Open.
Second seed Hewitt survived an enterprising challenge from Czech Lukas Dlouhy while Haas edged past 147th-ranked Irakli Labadze at the Thailand Open.
Tennis coach Gavin Hopper was found guilty of charges relating to a teenage girl who attended a school where he taught.
The top seeds were shocked by Tommy Haas of Germany and Jurgen Melzer of Austria in the \nPilot Pen tournament.
Roger Federer eased through to the Halle Open final with a 6-4, 7-6 win over Germany's Tommy Haas.
World number one Roger Federer breezed through to the Halle Open semi-finals with a 6-3, 6-4 win over Germany's Philipp Kohlschreiber.
The 26-year-old has already done enough to replace Tommy Haas as the\n\nGerman No. 1 when the latest world rankings are released on Monday.
Tommy Haas and Alexander Waske rallied the Germans to a 2-1 win over favourites Argentina.
The Romanian will take on David Nalbandian in the final of the Munich Open.
Andy Murray overcame an ankle injury and staved off two match points on his way to a 3-6, 6-3, 7-6 victory over Haas in the Pacific Life Open.
In the semi-finals, the 13th seeded Murray will meet 12th seed Novak Djokovic of Serbia, who overpowered 14th seed David Ferrer of Spain 6-3 6-4.
Top seed Andy Roddick blasted his way into the last four with a 6-4, 6-1 victory over Peru's Luis Horna.
Both scored straight-set victories in Friday's semi-finals.
Germany's Tommy Haas beat third seed Nikolay Davydenko 6-3, 2-6, 1-6, 6-1, 7-5 to enter the semi-final.
Four of Nadal's closest rivals failed to make the last 16, however, as third seed Ivan Ljubicic, fifth seed Nikolay Davydenko, eighth seed James Blake and ninth seed Marcos Baghdatis were upset in their ties.
In the semi-finals, Agassi beat German fourth seed Tommy Haas, while Johansson beat fellow-Swede Michael Ryderstedt.
Tommy Haas beat Russia's Dmitry Tursunov 4-6, 7-5, 6-3 in the final of the Los Angeles Open.
Tommy Haas will take on Nicolas Kiefer in the final of the Mercedes-Benz Cup.
The former world number one staged a remarkable comeback in the second round of the Hamburg Masters.
Top seed Rainer Schuettler beat Swede Robin Soderling 6-4, 7-6 in the first round of the Munich Open.