LONDON — Chelsea broke Brentford's resistance with a potent second-half attacking display to eliminate the third-tier club from the FA Cup at the second attempt with a 4-0 victory Sunday, while Manchester City won by the same score against Leeds. Held by Brentford three weeks ago, Chelsea couldn't find a breakthrough until the 54th minute of the fourth-round replay when Juan Mata struck from the edge of the penalty area. Oscar found the net for the second time in four days, Frank Lampard side-footed in his 199th goal for the club, and captain John Terry completed the 4-0 thrashing with a header. "They made it very difficult," Terry said. "(They had) two banks of four and sat very deep." Chelsea will play at Middlesbrough on Feb. 27 in the fifth round. Man City is already through to the quarterfinals after beating second-tier club Leeds. Yaya Toure put the Premier League champion ahead after five minutes before Sergio Aguero scored from the penalty spot, helped to set up Carlos Tevez's close-range goal after the break and then collected his second off the post. "It was important we bounced back," City midfielder James Milner said. "They've knocked a few Premier League teams out of cups this season, so it was important we did a job and we did it well. We had to improve on last week, we did that." The only cup shocks of the weekend came Saturday with second-tier club Blackburn winning at Arsenal and third-tier team Oldham drawing with Everton. Just how lucrative a cup run can be to lower-league teams was highlighted by Brentford estimating that it has earned more than $1 million from the two fourth-round matches against Chelsea. Liverpool ended a winless run of five games in impressive fashion Sunday as it whipped an under-strength Swansea 5-0 in their Premier League clash. Victory saw Liverpool leapfrog Swansea into seventh spot and give former Swans manager Brendan Rodgers something to smile about at the end of a week that saw defeats by West Brom and then Zenit St Petersburg in the Europa League. A penalty from Steven Gerrard got it on its way and three goals early in the second-half from impressive debutant Philippe Coutinho, Jose Enrique and Luis Suarez wrapped up the points against a side seemingly distracted by the League Cup final with Bradford next Sunday. Daniel Sturridge, who like Coutinho missed the Europa League match, added a fifth from the penalty spot. Swansea manager Michael Laudrup was made to regret sending out a starting line-up shorn of several first choice players, including leading scorer Michu, preferring to give the 15-goal Spaniard time on the bench. The hosts were reduced to 10 men for the last 10 minutes of the match, not that it mattered much to the outcome, after Fabio Borini, who had just come on as a substitute, was taken off in agony with what looked like a dislocated shoulder.