Stephane Ruffier's terrible blunder and Zlatan Ibrahimovic's hat-trick saw Paris Saint-Germain thump Saint-Etienne 5-0 in Ligue 1 on Sunday.
Saint-Etienne goalkeeper Ruffier miscontrolled a simple back pass from Jeremy Clement in the 24th minute and was unable to prevent it from crossing the line before he desperately hacked it away, with only a sympathetic handshake from Ibrahimovic to console him.
And that set the tone for a miserable night for the visitors, who were completely outplayed in the French capital.
Ibrahimovic opened his account shortly before half-time with a thumping header and the Sweden international – returning from a rib muscle injury – added two more goals in the second half to take his league tally to five for the campaign.
Those goals after the interval sandwiched a spectacular Edinson Cavani strike as the hosts cruised to a resounding victory.
Defending champions PSG had struggled to recreate their dominant form of 2013-14 in the opening weeks of the new season, winning just one of their first three league matches, but a triumph of this nature is sure to fill coach Laurent Blanc with confidence.
Making PSG's win more impressive was the absence of key men Thiago Silva and Yohan Cabaye, through injury and suspension respectively, while for Saint-Etienne, the result ended their unbeaten start to the campaign.
Blanc made four changes from last week's goalless draw at Evian, as Thiago Motta featured for the first time since Bastia striker Brandao broke his nose with a headbutt in the aftermath of PSG's 2-0 win earlier this month.
Ricky van Wolfswinkel headlined Saint-Etienne's three alterations but predictably it was PSG and Ibrahimovic who threatened first, with the forward testing Ruffier with a low 30-yard free-kick in the 11th minute.
With the game devoid of any real pattern, PSG suddenly took the lead thanks to Ruffier's glaring error.
PSG were indebted to keeper Salvatore Sirigu for maintaining their advantage as the Italian tipped Mevlut Erdinc's well-hit volley over the crossbar 10 minutes before the break.
And the save proved crucial six minutes later as Ibrahimovic met Maxwell's left-wing cross and buried a powerful header past a helpless Ruffier.
Cavani, who had been quiet throughout much of the opening period, stung the palms of Ruffier with a thumping shot from distance three minutes after the interval.
After missing the target with a trademark acrobatic volley, Ibrahimovic capitalised on a woefully short backpass to round Ruffier and poke the ball home in the 62nd minute.
Cavani then made it four with a stunning curling effort from 25 yards which flew in off the right-hand post with Ruffier motionless once again.
The keeper ought to have been sent off 20 minutes from time when he tripped Ibrahimovic inside the area, but referee Clement Turpin inexplicably awarded only a corner after the loose ball was cleared by a defender.
Ibrahimovic got his hat-trick just two minutes later, though, as he ran onto Marco Verratti's pass and slotted a low finish under the hapless Ruffier, before being withdrawn by Blanc to a rapturous reception from the home fans.
|Gardner calls for fans´ support|
|Zidane: Benzema must score|
|Scholes: Liverpool are Champions League dark horses|
|Gerrard hopes for prolific Balotelli|
|Gervinho pens new Roma deal|
|Rodgers praises vice-captain Henderson|
|Argentine Primera Division Review: Independiente goalkeeper bags brace|
|Costa Rican Primera Division Review: Cartagines back to winning ways|
|Ronaldo to United a possibility, says Neville|
|Liga del Futbol Profesional Boliviano Review: Bolivar go top, Blooming slip up|
|Souness throws support behind Pardew|
|Allardyce targets defensive improvement|
|Bruce: Hernandez worth the wait|
|Ecuadorian Primera A Review: Barcelona win El Clasico del Astillero|
|Davies: Draw a fair result|
|Noble rues West Ham´s close shave|
|Klopp cautious with Kagawa|
|Eibar 0 Deportivo La Coruna 1: Dominguez earns Fernandez first win|
|Hull City 2 West Ham 2: Debutants star in KC drama|
|Verona 2 Palermo 1: Pisano own goal seals home win|
|Turkish Super Lig Review: Fener, Gala and Besiktas all held|
|Roma v CSKA Moscow: Garcia ready to recall attacking stars|
|Van Basten to return to AZ following leave of absence|
|Olympiacos will be toughest tie - Simeone|
|Porto v BATE: Sandro in line for return as Porto seek strong start|
|Calhanoglu pledges to attack off-colour Monaco|
|Malmo have advantage over Juventus - Hareide|
|Chambers´ tonsillitis adds to Arsenal defensive woes|
|Hasi: No expectations for Anderlecht|
|Verratti extends PSG contract|
|Bayern Munich v Manchester City: Kompany urges belief|
|Prandelli calls on fans to voice their backing|
|Michel wary of Atletico prowess|
|Double fitness boost for Everton|
|Barcelona v APOEL: Pedro expecting tough test|
|Vidal and Pirlo to miss Malmo clash|
|Maribor v Sporting Lisbon: Slovenians end 15-year wait|
|Athletic Bilbao v Shakhtar Donetsk: Muniain eyes home comforts|
|Rodgers ready to embrace Champions League challenge|
|Milan confirm injuries to Lopez and Alex|
|Ajax v Paris Saint-Germain: Away form not a concern, says Van der Wiel|
|Experience the key for Monaco boss Jardim|
|Anelka joins Mumbai|
|Chelsea v Schalke: Costa aims to maintain prolific form|
|Ancelotti seeks response against Basel|
|Zaha not giving up on United and England future|
|Garcia to miss Blackpool game with chest pains|
|Lambert keen to keep Villa grounded|
|Adebayor wants ruthless streak|
|Lahm not missing Kroos|
|Begovic unconcerned by Stoke inconsistency|
|United duo lavish praise on Di Maria|
|Rami targets starting berth|
|Wilshere prefers advanced role|
|Calderon: Ronaldo disillusioned at Real|
|Ferdinand: Moyes´ tactics were embarrassing|
|I never meant to disrespect Southampton - Schneiderlin|
|I never meant to disrespect Southampton - Schneiderlin|
|Howard: Lukaku wants to be world´s best|
|Bielsa remaining tight-lipped over Labrune talks|
|Mourinho salutes Costa character|
|Bruce makes plea to Hull fans|
|Foster slams ´pathetic´ Brunt abuse|
|Donadoni rues errors in Milan loss|
|Seoul v Western Sydney Wanderers: A-League side eye away win|
|Colombian Primera A Review: Once Caldas go top|
|Venezuelan Primera Division Review: Deportivo Tachira continue unbeaten run|
|Copa Sudamericana Preview: Boca Juniors, River Plate hold narrow leads|
|Uruguayan Primera Division Review: Racing go clear at top|
|Chilean Primera Division Review: President, coach clash doesn´t derail Colo Colo|
|Peruvian Primera Division Review: Melgar, Universitario remain undefeated|
|Brazilian Serie A Review: Sao Paulo beat leaders|
|Paraguayan Division Profesional Review: Nacional Asuncion win again|
|San Jose Earthquakes 1 Los Angeles Galaxy 1: Keane´s penalty miss proves costly|
|Milan progression encourages Inzaghi|
|Ligue 1 Review: Marseille revival continues as Lille stay unbeaten|
|La Liga Review: Valencia continue resurgence, Sevilla ignore goalkeeper crisis|
|Menez thrilled with Milan victory|
|Primeira Liga Review: Porto held at Guimaraes, Boavista claim first win|
|Serie A Review: Goals flow as Inter and Milan both win|
|Parma 4 Milan 5: Visitors triumph in nine-goal thriller|
|Galatasaray v Anderlecht: Unfancied pair meet in Turkey|
|Di Francesco: I would have gladly made 11 changes|
|Liga MX Review: America held by strugglers Universidad, Santos close in on leaders|
|Van Gaal focused on United trajectory|
|Borussia Dortmund v Arsenal: Familiar opponents renew rivalry|
|Championship Preview: Adams talks up Norwich, Wolves head to unbeaten Charlton|
|Bundesliga Review: Hamburg beaten again, Augsburg claim first points|
|Eredivisie Review: Cambuur humble rivals Groningen, Vitesse finally win|
|League Two Preview: Flitcroft urges Bury caution, Burton out to extend lead|
|Benfica v Zenit St. Petersburg: Battle of the high-fliers|
|Redknapp expected heavy United defeat|
|United can do much better, says Van Gaal|
|Benitez at a loss to explain Napoli defeat|
|Manchester United 4 QPR 0: Di Maria steals show on Falcao debut|
|League One Preview: Cotterill demands focus, Dickov bids to ease pressure|
|Monaco v Bayer Leverkusen: Hosts eye positive amid awful start|
|Mazzarri praises ´ideal´ Inter|
|Al Qadsia v Persipura: Kuwaitis seek place in third final|
|Liverpool v Ludogorets: Five-time winners back in the Champions League|
|Real Madrid v Basel: Break from La Liga woes for Ancelotti´s men|
|Inter 7 Sassuolo 0: Icardi hits hat-trick in rout|
|Nottingham Forest 1 Derby County 1: Scrambled equaliser earns visitors a point|
|CSL Review: Henan drop into bottom two after last-gasp equaliser|
|Juventus v Malmo: Allegri´s men aiming to crack Europe|
|Olympiacos v Atletico Madrid: Simeone´s men on crest of a wave|
|K. League Review: Top two earn narrow victories, Sangju Sangmu end winless run|
|Badstuber requires surgery on thigh injury|
|Godin: Our mentality remains|
|Bruce slams ´disrespectful´ Newcastle speculation|
|Pogba confirms Juve talks|
|Gotze expecting improvement at Bayern|
|Mancini interested in Portugal role|
|I was never close to United move - Muller|
|Welbeck impresses Wenger with debut display|
|Mourinho wary of Euro group rivals|
|Rio Ferdinand will never forgive ´biggest idiot´ Terry|
|MLS Review: New England win again, New York held|
|Erbil v Kitchee: Belencoso the key for Molina´s men|
|Al Hilal v Al Ain: Dalic happy with preparation|
|CONCACAF Champions League Preview: In-form Red Bulls travel to Canada|
|Casillas accepts fans´ criticism|
|Primeira Liga Review: Sporting held again, Rio Ave back to summit|
|La Liga Review: Atletico claim bragging rights, Neymar inspires Barca|