Ten-man Huddersfield Town crashed to a 5-0 defeat at Carrow Road, where Norwich City struck three times in six minutes in a sizzling start to the second half.
Centre-back Murray Wallace was handed a straight red card for his 15th-minute challenge on Huddersfield-born striker Cameron Jerome, leaving the visitors firmly up against it.
His teammates held out until half-time, but were overrun as the introduction of winger Nathan Redmond brought the home side to life.
Former Leeds United midfielder Bradley Johnson (2) and Redmond were on target before Jerome and substitute Lewis Grabban ensured a heaviest defeat of the season for Town.
Both sides were unchanged as they tried to build on wins the weeks before, Town against Brentford and Norwich against Wigan Athletic.
That meant both Jacob Butterfield and Grant Holt were on familiar territory, while Town's third former Norwich player, James Vaughan, was on the bench.
Sean Scannell, a scorer against Brentford, was making his 50th Town start in all competitions.
Norwich began brightly, but Town had the clearest early chance, with Nahki Wells lifting a shot against the bar in the 12th minute.
Inevitably, Norwich bossed proceedings after Town went down to 10 men, but the visitors, with Conor Coady moved from midfield to defence, initially responded well.
Gary Hooper had a header saved by Alex Smithies, before fluffing a great chance when Johnson's low cross got stuck under his studs.
Johnson and fellow former Leeds man Jonny Howson were both off target with shots, and Jerome with a header.
The home fans were frustrated by the failure to make a breakthrough, but they were soon cheering as Johnson bundled the ball home from former Celtic striker Hooper's back-heel 45 seconds after the restart.
Redmond doubled the lead with a looping header, then Johnson nodded home after Jack Robinson blocked Howson's shot.
Tommy Smith's deflected drive was tipped over by home keeper John Ruddy before Jerome headed in after 68 minutes.
Grabban, who came on after 75 minutes, was quickly in the action, shooting home his side's fifth.
Ruddy showed good reflects to deny Jonathan Hogg a late consolation for Town.