Frank Lampard's expensively reshaped Chelsea made a winning start to their Premier League campaign with victory at Brighton.
Timo Werner, signed from RB Leipzig, and his Germany team-mate Kai Havertz, brought in from Bayer Leverkusen, made their debuts in a Chelsea side who had to work hard for their win.
Werner was pacy and prominent, winning a 23rd-minute penalty when he was hauled down by Brighton keeper Mat Ryan, Jorginho scoring the resulting spot-kick.
Brighton lost summer signing Adam Lallana to injury before the break but were back on level terms after 54 minutes when Leandro Trossard's 20-yard shot squirmed its way past Chelsea keeper Kepa Arrizabalaga.
Chelsea regained their lead two minutes later when Reece James ripped a 25-yard right-foot shot high past Ryan.
Brighton should have equalised when Lewis Dunk somehow headed wide at the far post, paying the price for the miss when Kurt Zouma's shot was deflected past Ryan by Adam Webster.
Rate the players - Brighton 1-3 ChelseaReaction to Chelsea's victory at BrightonRusty Chelsea will take the points
Timo Werner joined Chelsea from RB Leipzig on a five-year deal this summerChelsea boss Lampard will be delighted to leave Brighton win three points after what was a mixed performance, perhaps understandable for the first Premier League outing of the season.
Lampard got what he wanted, apart from a debut goal, from Werner as he was a constant menace, always on the move and looking to use his speed to get behind the Brighton defence. He had no trouble adjusting to the tempo of the Premier League and there seems little doubt goals will come.
Havertz was a more low-key presence on the right side of midfield in front of James but he worked hard in his 79 minutes and drew warm applause from Lampard for one lengthy recovery run back into his own penalty area to clear danger.
Chelsea were without injured left-back Ben Chilwell, signed for £50m from Leicester City, and Thiago Silva as he has only just joined training and Lampard will be keen to get that influential duo into a defence that still looks vulnerable.
Tariq Lamptey's crosses caused trouble all night and Chelsea were grateful for that headed miss by Dunk at the far post when it looked easier to score.
And once again there were questions over keeper Kepa, who got close to Trossard's shot but allowed it to creep in.
It seems his time is running out as Chelsea's first-choice goalkeeper, with the £20m signing of Rennes' Edouard Mendy apparently imminent.
Brighton rue missed chance
Adam Lallana joined Brighton on a free from Liverpool this summerBrighton can take some satisfaction through the pain of a defeat that will leave manager Graham Potter bitterly frustrated.
The Seagulls acquitted themselves very well and had the game's outstanding performer in former Chelsea right-back Lamptey, who was industrious and creative in a top-class display.
And the momentum appeared to be with Brighton when Trossard scored a deserved equaliser - only for them to concede a second within two minutes from James' thunderous finish.
Brighton then wasted the best chance of the game when Dunk headed wide and were unable to recover as Chelsea re-established a two-goal lead.
This was, however, a very respectable performance. On the down side, Potter is facing the issue he must have feared when he signed Lallana from Liverpool.
Lallana is a great asset when fit - but therein lies the problem. He did not last the first half and has now failed to play 90 minutes in the Premier League since he faced Middlesbrough for Liverpool in May 2017.
Man of the match - Tariq Lamptey (Brighton)
Defender Tariq Lamptey made more tackles and interceptions than any of his Brighton team-mates in another impressive display.2,000 points - the best of the stats
This victory earned Chelsea their 2,000th point in the Premier League (1,077 games), making them the third side to reach that total since the competition began in 1992, after Manchester United (2,234) and Arsenal (2,014).Brighton have won just one of their 10 home Premier League games in 2020 (D4 L5), the fewest of any side to have played two or more home matches in the competition this calendar year.Since the start of last season, Chelsea's 20 away Premier League games have produced 81 goals (42 for, 39 against), at least 14 more than any other side on their travels.Chelsea have scored each of their past 16 penalties in the Premier League, since Eden Hazard missed from the spot against Manchester City in April 2017.Jorginho has scored all eight of the penalties he has taken for Chelsea in all competitions (excluding shootouts), including five in the Premier League.Since he joined Chelsea in 2018, Kepa Arrizabalaga has conceded more Premier League goals from outside the box (19) than any other goalkeeper. Indeed, excluding blocked shots, Kepa has conceded nine of the past 13 overall shots on target he has faced in the Premier League.Leandro Trossard has scored three goals in his past six Premier League games for Brighton, as many as he netted in his first 26 appearances in the competition before this.Kurt Zouma scored what was only his second Premier League goal for Chelsea (72nd appearance), and his first since September 2015 against Arsenal.Line-ups
Brighton
1Ryan3WhiteSubstituted forGroßat 79'minutes5Dunk4Webster2LampteyBooked at 81mins14LallanaSubstituted forConnollyat 45'minutes8Bissouma17AlzateSubstituted forJahanbakhshat 79'minutes20March9Maupay11TrossardSubstitutes
6Stephens7Connolly13Groß16Jahanbakhsh23Steele33Burn34VeltmanChelsea
1Arrizabalaga24James4Christensen15Zouma3Alonso7Kanté5JorginhoSubstituted forAzpilicuetaat 85'minutes29HavertzSubstituted forHudson-Odoiat 80'minutes19Mount12Loftus-CheekSubstituted forBarkleyat 61'minutes11WernerSubstitutes
2Rüdiger8Barkley9Abraham13Caballero18Giroud20Hudson-Odoi28AzpilicuetaLive Text
Match ends, Brighton and Hove Albion 1, Chelsea 3.
90'+4'
Second Half ends, Brighton and Hove Albion 1, Chelsea 3.
90'+4'
Attempt saved. Ross Barkley (Chelsea) right footed shot from outside the box is saved in the bottom right corner. Assisted by Timo Werner.
90'+3'
Adam Webster (Brighton and Hove Albion) wins a free kick in the defensive half.
90'+3'
Foul by Ross Barkley (Chelsea).
90'
Lewis Dunk (Brighton and Hove Albion) wins a free kick in the defensive half.
90'
Foul by Mason Mount (Chelsea).
86'
Adam Webster (Brighton and Hove Albion) wins a free kick in the defensive half.
86'
Foul by Ross Barkley (Chelsea).
85'
Substitution, Chelsea. César Azpilicueta replaces Jorginho because of an injury.
81'
Tariq Lamptey (Brighton and Hove Albion) is shown the yellow card for a bad foul.
81'
Foul by Tariq Lamptey (Brighton and Hove Albion).
81'
Ross Barkley (Chelsea) wins a free kick on the left wing.
80'
Attempt saved. Aaron Connolly (Brighton and Hove Albion) right footed shot from outside the box is saved in the bottom right corner.
80'
Substitution, Chelsea. Callum Hudson-Odoi replaces Kai Havertz.
79'
Substitution, Brighton and Hove Albion. Pascal Groß replaces Ben White.
79'
Substitution, Brighton and Hove Albion. Alireza Jahanbakhsh replaces Steven Alzate.
78'
Foul by Yves Bissouma (Brighton and Hove Albion).
78'
Ross Barkley (Chelsea) wins a free kick in the defensive half.
77'
Corner, Chelsea. Conceded by Ben White.
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