Crystal Palace and Wolverhampton Wanderers have given the English FA Cup quarter-finals a Premier League flavour, by beating lower-division teams away.
Palace defeated third-tier Doncaster Rovers 2-0 and Wolves edged second-tier Bristol City 1-0 on Sunday (local time) to make it six top-flight teams in the last eight.
They join Manchester City, Brighton, Watford, and either holders Chelsea or Manchester United, who wrap up the fifth round on Monday.
"We knew if we get past this round, we'd be in a good position," Jeffrey Schlupp, who scored Palace's opener, told the BBC.
"It's a special tournament and any trip to Wembley [the semi-finals and final venue] is special and hopefully we can do that."
The remaining two slots are filled by Championship sides, after Swansea came from behind to beat 10-man Brentford 4-1 and progress alongside Millwall.
"The quarter-finals doesn't happen very often in Swansea history," manager Graham Potter said. "We're excited about the competition and delighted to go through."
First-half goals from Schlupp and Max Meyer were more than enough for Palace in Doncaster.
Schlupp got things going in the eighth minute and Meyer added the second in stoppage time.
The Eagles then comfortably saw out the rest of the game to deny Doncaster a first quarter-finals appearance in club history.
Swansea took advantage of a sending off to beat Brentford in south Wales.
Brentford led at the half, through Ollie Watkins, but the hosts drew level through Luke Daniels' own goal just after the re-start.
Dan James put Swansea in front four minutes later and the game changed just after the hour, when Ezri Konsa was shown a red card for taking down James.
Bersant Celina made them pay just four minutes later and George Byers capped the fightback with a late fourth.
Ivan Cavaleiro's first-half goal lifted Wolves to their first quarter-final since 2003.
"We knew it was going to be tough today," Wolves captain Conor Coady told BT Sport.
"People think, because you're a Premier League team, you should come and turn them over. They caused us problems and sometimes you have to dig in."
Bristol City pressed hard for a late equaliser, but were denied, when John Ruddy tipped Matt Taylor's header over the bar.
"I think we had the chances to pull it off," City manager Lee Johnson said. "We just couldn't get it over the line."