BEIJING (Reuters) - Americans Venus and Serena Williams won the battle of the sisters on Saturday, beating Alona and Kateryna Bondarenko of Ukraine to reach their second Olympic doubles final.
The Williams, who together claimed gold medals in Sydney eight years ago, went through 6-4 4-6 6-1 against the Australian Open champions.
"There's no temptation to celebrate yet," Serena told reporters. "We always want to go for the highest peak.
"I have a lot of space for (a gold medal). Hopefully I can get it. Hopefully we'll be able to and I'll be able to show people a new one."
After two tight sets the Bondarenko challenge fizzled out and they were blown away in the decider. They can still win a first Olympic tennis medal for their country in Sunday's bronze medal match.
The Williams will discover their opponents for Sunday's final later when Chinese pair Zheng Zie and Yan Zi take on French Open champions Anabel Medina Garrigues and Virginia Ruano Pascual of Spain.
(Editing by Keith Weir)