Double defending Davis Cup champions Czech Republic moved into the semi-finals of this year's tournament after completing a 5-0 whitewash over Japan on Sunday.
Having already booked a semi-final spot by winning both the opening singles and then Saturday's doubles, the Czechs made it a clean sweep by adding Sunday's reverse singles.
Lukas Rosol and Jiri Vesely maintained the momentum from the opening two days as they beat Yasutaka Uchiyama and Taro Daniel respectively, in matches reduced to three sets given the tie was already won.
Both sides were without their top players, as Tomas Berdych didn't play for the Czechs and Kei Nishikori couldn't take to the court for Japan through injury.
Czech captain Jaroslav Navratil saw his side make the semis for the fifth time in six years, as they now chase a first hat-trick in the Davis Cup since the Americans won the third of their five titles in a row back in 1970.
"We have won the trophy the last two years so we have confidence," he said. "First we will see if Tomas can play for us. We have five months to prepare and we will see what happens after Wimbledon and the US Open."
Next up for the Czechs in the semi-finals will be France, who rallied from 2-0 down to defeat Germany 3-2.
Jo-Wilfried Tsonga cruised past Tobias Kamke 6-3 6-2 6-4 to level the tie before Gael Monfils secured the winning point by defeating Peter Gojowczyk 6-1 7-6 (7/0) 6-2.