Lacazette fired the Gunners ahead in the eighth minute after poor defending by the home side before new signing Gabriel made it 2-0 in the 49th and Aubameyang put the icing on the cake with a superb shot into the top corner.
Liverpool's slim Premier League title hopes faded further on Saturday when Michail Antonio's late header earned West Ham United a deserved point with a 2-2 draw.
IMAGES from the EPL matches played on Sunday
Michael Olise scored a stoppage-time penalty as Crystal Palace clawed back from two goals down to draw 2-2 with Manchester City in the Premier League at the Etihad Stadium on Saturday.
The Premier League's bottom two clubs met at Goodison Park and there was more woe for Everton as they bowed out on penalties to Southampton after a 1-1 draw.
Manchester City took another decisive step toward an unprecedented fourth successive Premier League title with a 4-0 demolition of Fulham.
Thaksin Shinawatra asked one of his country's soccer experts to do some research into premier league club.
Unfashionable Premier League side Fulham knocked favourites Juventus out of the Europa League after an astonishing 4-1 win over the Italians who finished the last 16 second leg game with nine men on Thursday.
Manchester City's Kevin de Bruyne sparked a late comeback 3-2 victory for his side at Newcastle United.
An injury-time goal from Fulham's Darren Bent inflicted more pain on struggling Manchester United as the bottom club rescued a 2-2 Premier League draw on Sunday while Tottenham Hotspur beat top-four rivals Everton 1-0.
Fulham withstood a fierce fightback from Queens Park Rangers to beat their London rivals 3-2 and push Harry Redknapp's side closer towards Premier League relegation on Monday.
Fulham crushed Premier League rivals Tottenham Hotspur 4-0, 10-man Arsenal scraped a 2-1 win over League One Huddersfield and big-spending Manchester City drew 1-1 with Notts County in the FA Cup fourth round on Sunday.
Fulham shrugged off the effects of 17 hours travelling on a coach to hold Hamburg SV to a 0-0 draw in the first leg of their Europa League semi-final on Thursday.
English Premier League champions Manchester City beat FA Cup winners Manchester United 7-6 on penalties to win the Community Shield.
Mohamed Salah's early penalty in the return match on Thursday gave Liverpool a 1-0 victory in Italy but Klopp's side went out 3-1 on aggregate.
IMAGES from the English Premier League matches played on Wednesday.
Martin Jol's two-year spell as Fulham manager ended on Sunday after the Dutchman proved unable to reverse the club's sinking fortunes.
Wayne Rooney's 21st Premier League goal of the season secured a 1-0 victory for Manchester United over Fulham on Monday to put them three points clear of Manchester City in the title race.
Chelsea were held to a goalless draw at neighbours Fulham on Monday and a disappointing night for the Premier League champions would have been even worse but for a stoppage-time penalty save by goalkeeper Petr Cech.
The result leaves Southampton, now winless in their last nine games, 19th in the 20-team English Premier league.
Arsenal put to bed talk of an early-season crisis with a fluent 3-1 win at Fulham to register their first Premier League points of the season on Saturday.
Paul Scholes and Wayne Rooney were sent of as champions Manchester United were beaten while Chelsea lost to Tottenham Hotspur in teh English Premier League.
Liverpool are third, with 58 points in 30 games with Manchester United on 60 and Chelsea on 75.
News of all that's transpired on and off the football field.
IMAGES from the English Premier League matches played on Sunday
Fulham's abject season reached a new low as third-tier Sheffield United snatched a last-gasp winner in extra time to dump the Premier League side out of the FA Cup 1-0 in a fourth round replay on Tuesday.
Tottenham Hotspur strengthened their claim for a top-four finish in the Premier League with a comfortable 2-0 win over Fulham on Tuesday as Liverpool could only manage a 0-0 draw at struggling Wolverhampton Wanderers.
Vitaliy Mykolenko's 39th-minute own goal had put Luton ahead before Jack Harrison cheered the Everton faithful with an equaliser in the 55th minute, hammering in a low shot that Luton keeper Tim Krul allowed to let slip through his hands.
Champions City are second in the Premier League standings with six points from two games. They travel to promoted Sheffield United on Saturday before hosting Fulham on September 2.
Chelsea manager Jose Mourinho has hit out at the Premier League schedule, saying his players have not had a chance to recover from their midweek Champions League match before playing Fulham on Saturday.
Bernardo Silva and Jack Grealish scored three minutes apart as Manchester City came from behind to beat Premier League newcomers Luton Town.
The battle for Champions League qualification continues with fourth-placed Aston Villa away to Luton Town on Saturday and Tottenham Hotspur, who are five points behind with a game in hand, hosting Crystal Palace.
Fulham forgot their Premier League struggles to sweep into the FA Cup fourth round with a 3-0 victory over fellow top-flight strugglers NorwichCity in a third-round replay on Tuesday.
IMAGES from the Premier League matches played on Saturday.
Yossi Benayoun struck in injury time to give Liverpool a hugely important 1-0 victory at Fulham that took them top of the Premier League on Saturday. The win takes Liverpool to 67 points, two ahead of champions Manchester United, who have two games in hand and host Aston Villa on Sunday.
Fulham chairman Mohamed Al Fayed says he was offered Brazilian striker Rivaldo in June -- but could not afford to buy him. \n\n
Kevin de Bruyne struck twice to inspire Manchester City to a dominant 4-2 win at Crystal Palace on Saturday and move the champions level on points with Liverpool at the top of the Premier League table.
Stoke City survived a second-half fightback by Fulham to secure a lively 3-2 Premier League win over the Londoners at a snowy Britannia Stadium on Tuesday.
Fulham have turned down an offer from champions Manchester United for their French striker Louis Saha.