Celtic placed down an early Champions League marker after hammering Slovan Bratislava 5-1 in Wednesday's opener.

Arne Engels teed up Liam Scales' fierce headed opener in the 17th minute at Celtic Park, before the midfielder himself scored from the penalty spot in the second half.

Kyogo Furuhashi had earlier added Celtic's second goal of the game just nine minutes before Engels' penalty, awarded for a needless pull on Alistair Johnson by Danylo Ignatenko.

Switzerland defender Kevin Wimmer reduced the arrears on the hour with a delightful outside-of-the-boot finish, though Daizen Maeda soon restored the advantage 10 minutes later after linking up with Reo Hatate.

Substitute Adam Idah rounded the scoring off with four minutes remaining, latching onto James Forrest's pass to complete a convincing triumph.

Data Debrief: Celtic firing on all cylinders

Engels' fine individual showing made him only the second player to both score and assist a goal on his Champions League debut for Celtic, after Sweden great Henrik Larsson against Juventus in September 2001.

Brendan Rodgers' side were completely dominant in every aspect, too, accumulating a massive 3.22 expected goals (xG) tally to Bratislava's minimal 0.30.

It was also just the second time Celtic have smashed four or more goals in one match in the competition, having also managed to do so in a 4-3 victory over Juve in October 2001.

With goals coming from all over the place, Celtic had five different scorers in a European Cup/Champions League match (excluding own goals) for the first time since September 1973 against TPS Turku (Dixie Deans, George Connelly, Harry Hood, James Johnstone, Thomas Callaghan).

Brendan Rodgers was encouraged by Arne Engels' debut after he scored from the penalty spot to continue Celtic's perfect start to the Scottish Premiership season with a 2-0 victory over Hearts. 

After dominating the opening exchanges, the hosts were offered the chance to take the lead from 12 yards early in the second half. 

Nicolas Kuhn's cross was blocked by the hand of James Penrice, with Engels making no mistake from the spot to net his first Celtic goal since his switch from Augsburg. 

Luke McCowan confirmed the triumph in the 89th minute, also scoring his first goal for the club, with Rodgers pleased with the pair, but showering particular praise on Engels.

"He's here playing in the eight position," Rodgers said. "He's here with legs and energy and power, he should be able to score goals for us. A good performance from him."

But the encounter could have taken on a much different complexion after the visitors were awarded a penalty of their own in the first half. 

Lawrence Shankland's header came off Liam Scales' arm, only for VAR to overturn the decision, and Rodgers believed the right call was eventually made.

"When the referee gives it, it’s always going to be looked at," Rodgers said.

"The ball hits Liam Scales up towards the shoulder on that sleeve part and that’s not a penalty. By the rule, the officials were correct."

Rodgers' side are top of the table with 15 points, ahead of Aberdeen on goal difference, and return to Champions League action on Wednesday when they welcome Slovan Bratislava to Celtic Park in their opening match of the competition. 

Belgium boss Domenico Tedesco has opted to stick with a 25-man squad for Euro 2024, despite having the option to include an additional player.

Tedesco initially named a 25-player party, notably excluding Real Madrid goalkeeper Thibaut Courtois, while inviting Arne Engels and Mandela Keita to train with the team ahead of their final warm-up matches against Montenegro and Luxembourg.

The head coach was expected to maximise his squad to the allowed capacity of 26 players before the deadline by including one of the young midfielders, but he has chosen to remain with his provisional selection.

Nevertheless, Belgium have plenty of quality and experience throughout the squad, including the likes of skipper Kevin De Bruyne, Romelu Lukaku, Leandro Trossard and Youri Tielemans, as well as most-capped player Jan Vertonghen. 

"We have decided to go to the European Championship with 25 [players]," Tedesco told reports during a press conference.

"It's all about the group spirit. I didn't want to disappoint a young player. I have always been clear that we would go to Germany with 25."

The Red Devils boss also provided an injury update on Vertonghen, who is currently nursing a groin problem, but is expected to recover in time for the tournament.

"It won't be long before Vertonghen is back," Tedesco added. "Of course, it is not easy for him to be on the sidelines, but he is an important player in our selection."

Belgium complete their preparations against Luxembourg on Saturday. They begin their Euro 2024 campaign against Slovakia on June 17, while also facing Ukraine and Romania in Group E.