Tomas Berdych into quarters
Need the scores from any match played in today's tournaments? Results
No. 6-seeded Raonic moved on when his second-round opponent, Viktor Troicki of Serbia, retired with a right calf injury while trailing 3-0.
Berdych broke Falla once in each set without giving away a break chance, and closed their first meeting with his ninth ace at Ariake Colosseum. He notched his 50th win of the season.
The Czech, the 2008 champion here, is seeking his second title of the year after winning indoors in Montpellier, France, in February.
"The big difference between today and my first-round match is that I am feeling much better physically," Berdych said.
Copyright 2012 by The Associated Press
MORE TENNIS HEADLINES
- Oudin: Overtraining caused muscle ailment
- Serena, Azarenka to play exhibition in Thailand
- Serena is WTA player of year for 5th time
- Sharapova hires Groeneveld as new coach