Britain's Andy Murray remains on course to win back-to-back Olympic tennis gold medals after beating Japanese fourth seed Kei Nishikori in the semi-finals.
The Scot won 6-1 6-4 and will play Juan Martin del Potro in Sunday's gold-medal match (19:00 BST) after the Argentine beat Spain's Rafael Nadal.
Del Potro, ranked 141st in the world, won 5-7 6-4 7-6 (7-5).
World number two Murray, 29, is attempting to become the first player to win two Olympic singles titles.
He won his second Wimbledon - and third Grand Slam - last month.
"It's obviously not an easy thing to do, that's why it's never been done before," said Murray about the prospect of another gold medal.