
Alonso made three changes to the side that started Sunday’s goalless Bundesliga draw at Wolfsburg, bringing in Jonathan Tah for Odilon Kossounou in defence, while Bakker and Florian Wirtz came in for Kerem Demirbay and Sardar Azmoun, who both dropped to the bench. The Werkself will now face Italian side Roma in the final four in May after they beat Feyenoord in extra-time.
An electric atmosphere inside Lotto Park – home of fellow Brussels-based club Anderlecht – saw Leverkusen get off to a lightning start. The game was barely two minutes old when Wirtz took advantage of a mistake at the back by the hosts to slip in Diaby, who rounded goalkeeper Anthony Moris to put Bayer 04 ahead on the night and in the tie.
Unperturbed by the setback, Union tried to move quickly through the middle, but the Werkself were quick to disrupt their play. Alonso’s men also still looked to attack and combine in front of the Belgians’ goal. A long ball up to Diaby in the 17th minute again caused danger as he raced down the right but put his shot into the side netting. Moments later, Bakker’s cross from the by-line to the far post was met by Frimpong, only for defender Koki Machida to get in the way.

Third time was the charm for Leverkusen as a turnover in the centre circle saw Diaby race away and lay the ball right to Hlozek. The Czech forward delivered a high ball towards the far post, where Bakker was perfectly positioned to put away first time for 2-0 on 38 minutes.
Both sets of supporters were vocal again after the restart. It was St. Gilloise who mustered up the first couple of efforts of the second half, but Lazare Amani’s long-range shot and Victor Boniface’s header amounted to nothing. By contrast, committed pressing from Bayer 04 paid off as Bakker hounded three Union players, including goalkeeper Moris. His clearance went straight to Frimpong, who just had to hit the target to put the visitors three to the good.
The Belgians hit back quickly with a goal of their own as a clearance landed with Terho, whose effort from outside the box deflected off Hlozek and past Lukas Hradecky to bring it back to 3-1 on the night. It seemed to awaken both Union and their supporters as the atmosphere grew more heated. Driven forward by that, the best chance fell to substitute Simon Adingra as he came in from the left and struck the frame of the goal.

However, it was Leverkusen who had the ball in the net next after they won the ball in their own half and Diaby fired off a shot. Moris was able to save but only parry for Hlozek to tuck home on 79 minutes and wrap things up.
Straight after the game, the Bayer 04 travelling party will return back to Leverkusen. They’re in action again on Sunday, 23 April (17:30 CEST) when they host DFB Cup holders RB Leipzig at the BayArena in the Bundesliga. After a run of midweek fixtures, the team now have a full week between games before going to Union Berlin on Saturday 29 April.
Match stats:
Saint-Gilloise: Moris – Nieuwkoop, Kandouss (Terho 46'), Burgess, Machida – Lynen, Teuma (Azzouzi 87'), Lapoussin – Vertessen (Adingra 31'), Amani (Puertas 81'), Boniface (Nilsson 81')
Bayer 04: Hradecky – Tapsoba (Kossounou 59'), Tah, Hincapie - Frimpong (Adli 71'), Amiri (Demirbay 59'), Andrich, Bakker - Diaby (Bellarabi 86'), Hlozek (Azmoun 86'), Wirtz
Yellow cards: Teuma
Goals: 0-1 Diaby (2'), 0-2 Bakker (38'), 0-3 Frimpong (61'), 1-3 Terho (65'), 1-4 Hlozek (79')
Referee: Antonio Mateu Lahoz (Spain)

With 22 days to go until the start of the Bundesliga campaign, the Bayer 04 Women’s team have gained a fresh boost of confidence. In a friendly against Belgian top-flight side KRC Genk on Saturday afternoon, coach Roberto Pätzold’s team secured a 1–0 win. Lobke Loonen (20’) scored the winner for the Black and Reds at the Kurtekotten training centre.
Show more
A successful fourth preseason friendly ahead of the start of the training camp: The Werkself secured a 3-0 victory over Rot-Weiss Essen at the Ulrich Haberland Stadium. The goals in what was a commanding and dominant performance by Leverkusen from the outset were scored by Ibrahim Maza (8'), Patrik Schick from the penalty spot (23’) and, in the second half, Montrell Culbreath with a header (79’). The team set off for their training camp in Blankenhain in the Weimarer Land region after the game.
Show more
Rüdiger Vollborn has been at the club for 40 years, he holds the record number of Bundesliga appearances for the club (401) and is the only Bayer 04 player to have won both the UEFA Cup (1988) and the DFB Pokal (1993). And the Berliner stayed with the Werkself after ending his impressive playing career as he worked as a goalkeeping coach for the following nine years. Vollborn now works under the Bayer Cross as a fan liaison officer and club archivist. Since February 2021, the personal Black and Red lexicon takes Werkself fans under the heading of 'Rudi recounts...' on a brief trip through the history of Bayer 04 every month…
Show more
You have voted – your ‘Team of the Quarter-Century’ has been decided! This historic selection, covering the period from 1 January 2000 to 31 December 2024, features honorary captains, Bundesliga champions, double winners and Champions League finalists. Edmond Tapsoba is the only player from the current Bayer 04 squad to make it into the starting XI, while his team-mate Patrik Schick is on the bench. Simon Rolfes, the current managing director sport, is also in the lie-up. A truly special team that brings together a quarter of a century of Bayer 04 history – and has left a decisive mark on the club.
Show more
Following Patrik Schick, Mark Flekken, Ibrahim Maza and Kerim Alajbegovic earlier this week, the next World Cup participant is back on the training ground in Leverkusen: On Thursday 30 July, Malik Tillman rejoined the squad, completing his first training session under head coach Carles Martínez.
Show more