The Croat easily beat Paradorn Srichaphan while Blake edged past Marat Safin in the semi-finals.
Both players were taken to three sets by lesser-fancied opponents in the semi-finals.
They were beaten by Lee Hyung-Taik and Paradorn Srichaphan respectively in the quarter-finals of the China Open.
Ivan Ljubicic and Nikolay Davydenko advanced to the quarterfinals of the China Open.
Leander Paes and his Spanish partner Tommy Robredo scored a straight set victory over Ivan Ljubicic and R Soderling to storm into the doubles semi-finals of the Euro 2,270,000 Hamburg ATP Masters Series on Friday. The unseeded Indo-Spanish pair won 6-2, 7-6 (3) to set up a semi-final clash with the second seeded duo of Canadian D Nestor and Nenad Zimonjic of Serbia, who downed fifth seeded combine of S Aspelin (Sweden) and James Knowles (Austria) 6-2 5-7, 10-8.
World number one Federer is looking to become only the third man in the Open era, after John McEnroe and Ivan Lendl, to win the title three years in succession.
David Nalbandian lost 6-1, 6-2 to Italian Davide Sanguinetti in the first round of Toronto Masters.
The third seeds thrashed Croatian pair of Mario Ancic and Ivan Ljubicic 6-2, 6-2 in the French Open doubles event.
Croatia reached the Davis Cup semi-finals for the first time after Ivan Ljubicic beat Romania's Andrei Pavel
Croatian beanpole Ivo Karlovic upset top-seeded compatriot Ivan Ljubicic to reach the quarter-finals of the grasscourt Nottingham Open on Wednesday.
Ivan Ljubicic and Gaston Gaudio were the biggest casualties in second-round matches at the Hamburg Masters
Holders Croatia had to be content with a win and a loss from the opening day's two singles rubbers in the Davis Cup.
The world No.1 maintained his stranglehold over the Croat to lift his second straight Nasdaq-100 Open title.
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.
Roger Federer swept aside Spain's David Ferrer 6-1, 6-4 in Nasdaq-100 Open semi-final
Roger Federer beat Russian Mikhail Youzhny at the Dubai Open on Saturday.
Britain's Tim Henman eased past Clement Arnaud and will meet third seed Richard Gasquet in the next round.
Sebastien Grosjean upset sixth seed Guillermo Coria while Tommy Robredo beat James Blake
The Argentine was stretched to five sets by Thai qualifier Danai Udomchoke.
The German became the first player to enter the final with a 6-4, 6-4 victory over Argentina's Guillermo Coria.
The world number nine beat Spain's Guillermo Garcia-Lopez 7-6 (6), 7-5 in a match that lasted over two hours at the Chennai Open.
Croatia's Ivan Ljubicic was awarded the third wildcard at the Chennai Open.
Croatia's Ivan Ljubicic will replace the Spaniard who had to pull out due to a prolonged injury he suffered in October.
Ivan Ljubicic stumbled in his bid to qualify for the Masters Cup when he lost 7-5, 6-7, 7-5 to Colombian Alejandro Falla in the quarter-finals of the Lyon Grand Prix on Friday.
Though Ivan Ljubicic was beaten in five sets by Dominic Hrbaty, Mario Ancic steered Croatia to their first Davis Cup title
Mario Ancic beat Slovakia's Michal Mertinak to claim a 3-2 victory for Croatia in the Davis Cup final.
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.
Slovakian number two Karol Beck was handed the daunting task of trying to stop Croatia's Ivan Ljubicic when the draw for the Davis Cup final was made on Thursday.
The towering Croatian, who has won 20 of his last 22 matches, will meet the unfancied Tomas Berdych in the Paris Masters final.
Croatian Ivan Ljubicic grabbed the last ticket to the eight-strong Masters Cup on Friday.
Nadal will equal world number one Roger Federer's haul of four Masters Series titles this year if he beats Ljubicic.
Ivan Ljubicic reached his second final in two weeks when he beat fifth-seeded Spaniard Tommy Robredo.