Arne Engels and Callum McGregor ran Slovan Bratislava into the ground - and now the dynamic duo top the Champions League charts for distance covered after 20 teams have played.
Celtic delivered their biggest win ever in Europe's elite competition as they charged through the Slovakian side like a runaway train under the lights at Parkhead.
Engels scored his second goal in as many games from the penalty spot to put them 3-0 up, and after Kevin Wimmer gave the visitors something to celebrate with an outside-of-the-boot curler past Kasper Schmeichel, Daizen Maeda and Adam Idah struck to make it a rout.
New signing Engels already looks worth every penny of the club-record £11m spent on him, having already struck up a telepathic understanding with his captain McGregor and Reo Hatate in the engine room.