Cardiff beat Colchester at a near-empty Cardiff City Stadium to become the first team to reach the fourth round of the FA Cup.
Joe Ralls’s deflected effort gave the Championship side a 1-0 half-time lead against their League One opponents.
Kadeem Harris’s hooked volley doubled the lead before Kenwyne Jones headed in seconds after coming on.
Freddie Sears pulled one back for Colchester with a low drive, but Cardiff were comfortable winners.
The attendance of 4,194 was the smallest ever at Cardiff City Stadium, lower than the crowd of 5,545 which watched Cardiff’s League Cup match against Dagenham & Redbridge in 2009.
Despite facing a Colchester side 35 places below them in the Football League, Cardiff named a strong and experienced side.
One of the six changes from Sunday’s dismal 4-2 defeat to Watford, Ralls, had the game’s first chance as his well-struck shot was palmed away by Sam Walker.
The Colchester goalkeeper did not fare as well against Ralls’s next effort, the Cardiff midfielder’s strike from the edge of the area deflecting off Kaspar Gorkss and Cole Kpekawa and looping into the net.
Colchester had chances of their own, Gorkss heading narrowly wide and Gavin Massey forcing Simon Moore into a superb save with a low shot from close range.
It was more comfortable for Cardiff in the second half, and Harris scored their second goal in acrobatic fashion as he latched on to Ben Turner’s header and connected with an overhead kick.
Victory was sealed seven minutes later as Jones, on as a substitute only a few seconds, headed in from Peter Whittingham’s corner with his first touch of the game.
With hopes of a comeback all but gone, Colchester claimed a late consolation goal as Sears scored with a low shot despite a touch from Moore