Besiktas started their quest to qualify for the knockout stages of the Champions League in fine style as they claimed a surprise 3-1 win at Porto on Wednesday.
The Super Lig champions have never gone beyond the group stages of Europe's premier club competition in its modern guise, but made their ambitions clear this close-season by bringing in the likes of Pepe, Gary Medel and Alvaro Negredo.
And Besiktas now sit top of Group G after seeing off Porto at Estadio do Dragao, with Cenk Tosun's somewhat fortuitous long-range strike putting last season's Europa League quarter-finalists into a lead they would not relinquish.
Anderson Talisca, on loan from Porto's Primeira Liga rivals Benfica, will have drawn further ire from the home fans when he headed Besiktas in front in the 13th minute.
Porto levelled eight minutes later through Dusko Tosic's own goal but Tosun quickly hit back in the 28th minute.
Former Real Madrid goalkeeper Iker Casillas managed to let Tosun's effort evade his grasp, and he was equally at fault as Ryan Babel scored Besiktas' third goal of a victory that moves them two points clear at the top after RB Leipzig and Monaco drew 1-1.
Besiktas had the better of an open start to proceedings and Babel saw a curling effort deflected over the crossbar before Talisca broke the deadlock.
The Brazilian timed his run into the box perfectly to meet Ricardo Quaresma's right-wing cross and power a close-range header beyond Casillas.
Porto responded well and Oliver Torres hit the post at the end of an attack started by a magnificent long ball from Casillas.
And the hosts were gifted an equaliser two minutes later as Tocic headed Alex Telles' corner from the left in at the near post.
Jesus Manuel Corona then had a tame effort from a tight angle kept out by Fabri as Porto looked to complete the turnaround.
But they instead fell behind once more, with Casillas at fault as Besiktas retook the lead.
Tosun let fly with a long-range swerving effort that Casillas failed to keep out despite getting a hand to the shot.
Tiquinho Soares curled narrowly wide from 20 yards out as he sought to restore parity once more before Oguzhan Ozyakup slipped and fired wide at the other end after finding himself in space in the box.
Porto made a double change before the start of the second half as Otavio and Andre Andre were brought on for Torres and Corona.
And they increased the pressure on the Besiktas goal as Tiquinho latched on to a Yacine Brahimi throughball only to be denied by Fabri, before Ivan Marcano had a goal-bound header blocked on the line.
Besiktas weathered that storm, though, and the visitors added late gloss to the scoreline as another Casillas error allowed Babel to make the game safe by finding the bottom-left corner.
|I would love to coach PSG – Mancini|
|Merson: Mkhitaryan will be a sensation at Arsenal|
|Wins over substance for Varane and Real Madrid|
|Arsenal´s Giroud the answer for Chelsea, says Parlour|
|Wenger: Sanchez exit won´t hurt like Van Persie|
|Zidane hopes late Leganes win is turning point for Real Madrid|
|De Gea happy to delay Man Utd contract talks|
|Leganes 0 Real Madrid 1: Asensio´s late goal lifts pressure on Zidane in Copa quarter-final|
|Toulalan follows Gourvennec out of Bordeaux|
|Dortmund´s Durm suffers torn ankle ligaments|
|Chelsea send Nathan to Belenenses on loan|
|Chelsea in talks over deal for Roma full-back Emerson|
|Gravel for breakfast but no worms on Dyche´s menu|
|Dybala is no Messi - Laudrup thinks comparisons are unfair|
|Dortmund leave Aubameyang out amid Arsenal links|
|Koulibaly would stay at Napoli ´forever´|
|Neymar´s PSG contract has no release clause, lawyer claims|
|Robben relaxed over Bayern contract talks as other clubs circle|
|Henderson returns to Liverpool training|
|Football´s biggest release clauses - Pique joins Messi, Ronaldo and LaLiga´s big boys|
|No offers for Evans yet, says West Brom boss Pardew|
|Stafylidis seals Stoke switch|
|Worry about your own team - Dortmund slam Wenger´s Aubameyang pursuit|
|Praet denies agreeing deal to join Juventus|
|No BBC for Real Madrid´s Leganes clash|
|Stoke close to Stafylidis signing|
|Brisbane Roar 3 Perth Glory 2: Holman settles five-goal thriller|
|Gourvennec leaves Bordeaux after seventh defeat in eight games|
|Pique agrees new long-term Barcelona contract|
|Wenger rules out Ozil sale as talks continue over Wilshere deal|
|Sanchez-Mkhitaryan deal close, says Wenger|
|Meunier blasts ´disgraceful´ PSG fans after Neymar boos|
|Pique demands better at Camp Nou after Espanyol ´insults´|
|Schweinsteiger re-signs with Chicago Fire for 2018|
|Juve trying everything to sign Can, says Marotta|
|Rooney convinced me to join Everton – Walcott|
|Simeone: Sevilla deserved their win|
|Conte calls for VAR improvements|
|Neymar not angered by PSG whistles - Silva|
|FA Cup Review: Wigan dump Bournemouth out, nine-man Chelsea scrape through|
|Valverde rues Barca profligacy in Espanyol defeat|
|Chelsea 1 Norwich City 1 (aet, 5-3 pens): Hazard and Caballero seal Blues progression|
|No generosity from Neymar as Cavani waits to make PSG history|
|Neymar sets Ligue 1 landmark with staggering individual display|
|Espanyol 1 Barcelona 0: Melendo ends unbeaten run|
|Paris Saint-Germain 8 Dijon 0: Neymar hits four as Cavani levels Ibrahimovic record|
|Atletico fan in ´serious condition´ after being stabbed before Sevilla game|
|Atletico Madrid 1 Sevilla 2: Montella´s men stage dramatic first-leg comeback|
|Lukaku will score 30 goals for Man Utd this season, predicts Yorke|
|Liverpool loan Grujic to Cardiff|
|Mbappe: More to come from Neymar & Cavani partnership|
|Messi the greatest ever despite no World Cup win, insists Di Maria|
|Villa determined to earn place in Spain´s World Cup squad|
|Walcott swaps Arsenal for Everton|
|You even learn from Guardiola at home - Otamendi lauds Pep impact|
|Otamendi pens Man City deal to 2022|
|Neymar leads tributes to retiring Ronaldinho|
|Ronaldo must focus on playing - Zidane sidesteps exit talk|
|Zidane still an idol for James despite ´sad´ Madrid exit|
|Stoger will stay at Dortmund if ´everything fits´|
|Bordeaux´s Malcom facing disciplinary action over social media video|
|Ronaldinho retires – The greatest Brazilians to play for Barcelona|
|Athletic reward Williams with contract until 2025|
|Jones taking unlikely inspiration from City in United´s title pursuit|
|Moyes unaware of Chelsea interest in Carroll|
|Verdi wants Bologna stay amid Napoli links|
|Ronaldinho retires – A shining light of Brazil´s 2002 World Cup-winning team|
|Ronaldinho retires – a World Cup and Ballon d´Or among Brazil great´s prizes|
|World Cup glory and Bernabeu magic - Ronaldinho´s best moments for Barca and Brazil|
|Ligue 1 Review: Balotelli at the double as Payet shines and Malcom toils|
|Pato still dreaming of World Cup selection|
|FA Cup Review: Iheanacho makes VAR history, kit confusion reigns|