Bayern Munich overturned a poor away leg result with a convincing performance at the Allianz Arena.
Pep Guardiola made one change to the side that suffered a defeat at the Dragao, introducing Holger Badstuber alongside Jerome Boateng at centre back.
Julen Lopetegui was without his first choice full-backs, which saw Diego Reyes and Marcano slot into Porto’s makeshift back-line. The Portuguese club’s front six was unchanged.
This was the antithesis of Bayern’s performance at Dragao, as they comfortably monopolized possession, whilst focusing on width to create chances.
The most interesting feat prior to the second leg was whether Porto would replicate the effective pressing that thwarted the Bavarians at Dragao. In Portugal, Lopetegui’s side pressed in phases out of possession, but here, the away side displayed considerable caution by dropping deeper into their half when Bayern surged forward.
Jackson continued to position himself goal-side of Xabi Alonso to prevent service into the Spaniard, along with preventing him from dictating the tempo from deep. Ricardo Quaresma and Yacine Brahimi moved towards the Bayern fullbacks, with only Hector Herrera pushing forward to aid the front three.
For the most part, Lopetegui’s makeshift back four weren’t keen on surging into advanced areas, and Porto often sat deeper in a 4-5-1 with the wingers pegged back due to Bayern’s adventurous fullbacks. The Porto wingers couldn’t dribble away from pressure, and with two makeshift fullbacks – who are natural centre backs – the decision to play a highline would be too risky.
However, the main talking point surrounded Bayern’s set up. In the first leg, Bayern’s 4-3-1-2 deprived the German side of natural width, and they equally encountered difficulties getting service into their attacking players.
Guardiola reacted to Bayern’s insufficiencies at Dragao by moving to a natural 4-4-2 with Phillip Lahm and Mario Gotze as wingers, while Lewandowski and Muller formed a natural strike partnership. Lahm aimed to combine with Rafinha and Muller, whereas Gotze stuck wide and drifted infield to create space for Bernat to surge into.
Both elements of width were non-existent in the first leg, enabling Porto to congest central areas and easily regain possession. Here, their initial shape was stretched, which presented more gaps for the likes of Thiago and Alonso to play into. But with both men faced with the task of evading Porto’s pressing in midfield, Badstuber and Boateng continuously pinged passes into wide areas.
Ultimately Gotze and Lahm’s wide positioning benefitted Lewandowski and Muller, as they effectively thrived as a natural strike duo. Lewandowski, renowned for his ability to operate as a poacher and a player to drop deep, was at his supreme best here.
Apart from the goal, Bayern’s best moves were created from the front two’s movement – Lewandowski would drop deep, whereas Muller would charge into the space behind the Porto defence. Bayern’s first legitimate chance was a prime example. Lewandowski dropped to the centre circle to receive service, and subsequently flicked the ball into space for Muller, thus leading to Fabiano making a good save, and the Pole hitting the post.
Although a traditional 4-4-2 is quite simplistic in the modern era, Guardiola’s alteration solved the main attacking issues Bayern faced in the first leg. Lahm and Gotze’s width created space for Alonso and Thiago to control the game in midfield, whereas Muller and Lewandowski operated as a classic strike partnership and attacked crosses into the box.
Bayern’s superiority was evident throughout the first half, and width was equally crucial in the buildup to their goals. Coincidentally, their lone away goal in the first leg stemmed from a Boateng cross, and in the first half, Guardiola’s men continuously launched balls into the box.
Initially it was Rafinha’s over hit cross that fell to Gotze, and his lay off to Bernat saw the Spaniard run past Quaresma to deliver a devastating ball towards the near post, which Thiago nodded past Fabiano. Badstuber and Boateng rose high to combine, as the latter nodded in Alonso’s cross from a short corner for Bayern’s second.
Still, it was the third goal that epitomized their approach. It was a truly superb goal that witnessed a 26 pass move conclude with a wonderful Thiago diagonal to the right flank and three magnificent first touches: Lahm instantly delivered the ball into the box, and Muller directed it into the path of Lewandowski who finished superbly.
As expected, the Bayern dominated possession, but Porto couldn’t cope with countless crosses into the box, which epitomized Guardiola’s successful tactical modification.
Both managers reacted to Bayern’s first half onslaught with caution: Ruben Neves replaced Quaresma as Porto transitioned into a 3-5-1-1 with Brahimi behind Jackson. Porto’s additional ball playing midfielder helped the away side enjoy longer spells of possession – Bayern’s pressing decreased – while the wingbacks pushed higher up the pitch to prevent Bayern’s fullbacks from storming forward.
Porto’s changes were made to gain control of the match through possession, and direct balls into Jackson led to a goal and great chance shortly afterwards. Jackson was still isolated upfront, and though Herrera assisted his side’s sole goal, the Mexican and Brahimi rarely combined with the Porto striker.
Bayern’s intent to close the match out through possession saw Guardiola move to a 4-3-3 with Lahm moving into midfield. Yet, Bayern’s best chances prior to Jackson’s consolation goal stemmed through deliveries from the right flank. The German outfit won the tie with a terrific first half performance, and the final 45 minutes were merely based around preventing further embarrassment.
Bayern were heavy favourites to mount a comeback in the second leg, and this was a truly remarkable display. Surely Porto displayed increased caution and pragmatism in comparison to their first leg triumph, but this was more about Guardiola altering the mistakes made in Portugal.
Put simply, Bayern focused on width and crossing to overturn the first leg result: it was a simple, yet effective approach. This was another example of Bayern’s augmented flexibility and evolution under Guardiola.