Raheem Sterling scores twice and provides an assist for Nicolas Jackson to open his account as a Chelsea player during a comfortable 3-0 win over Luton on Friday Night Football to inspire Blues to first win under Mauricio Pochettino
Blues captain John Terry, who is leaving the club at the end of the season, came on late in the match to make his first league appearance since November.
Chelsea's stuttering start to the Premier League season took another turn for the worse as Aston Villa piled more misery on the 10-man Blues with victory at Stamford Bridge.
Mauricio Pochenttino clinched his first trophy with the Blues following a 4-3 win over Brighton and a 1-1 draw with Newcastle during their pre-season tour of the USA.
Kcee gathered inspiration from his famous line on Harry Song's Reggae Blues where he said "Ladies call me talk and do, i talk i do" Watch, download and share.
Both sides had setbacks last week in their bids to play Champions League next season after Man United lost their home game 2-0 against Man City and the Blues were held to a 2-2 draw at Stamford Bridge by Burnley.
The 21-year-old continued to show why he has been the Blues' best player this season, picking up an assist inside six minutes as Nicolas Jackson (6) flicked home his shot.
Substitute Christopher Nkunku headed home in injury time on his Premier League debut but it was not enough to salvage a point for the Blues. This was another day when Chelsea's failings in attack came back to haunt them.
The Blues goalkeeper, bought this season to replace the unconvincing Kepa Arrizabalaga, clumsily brought down Dominic Calvert-Lewin which allowed Gylfi Sigurdsson to score the decisive 22nd-minute penalty.
And it's the Blues who have dominated this far with goals from Willian and Michy Batshuayi before half-time. Batshuayi then scored his second after the break. Arsene Wenger's men, on the other hand, have struggled to make an impression.
The Blues were second best in the first half, in which they fell behind to Christian Eriksen's superb strike. But Pedro matched Eriksen with a timely curled equaliser just before the break.
Chelsea skipper John Terry scored on what could be his Stamford Bridge farewell as the Blues celebrated winning the Premier League by nicking a thrilling victory against Watford.
Eden Hazard had put the Blues in front from the spot after Michail Antonio fouled Cesar Azpilicueta. James Collins levelled for the Hammers, but Costa's finish settled it.
Thomas Tuchel's Blues had won the 'away' leg of the quarter-final 2-0 in Seville last time out thanks to goals from Mason Mount and Ben Chilwell, leaving Porto with an uphill task in the return leg.