Lasse Koslowski
28 total assignments
Europa League03/12/2026
BOLOGNA FC 1909vsAS Roma
👤Assistant2
2025/26
Europa League02/19/2026
Pfk Ludogorets 1945vsFerencvárosi TC
👤Assistant1
2025/26
Champions League01/28/2026
PAFOS FCvsSK Slavia Praha
👤Assistant1
2025/26
Champions League12/10/2025
Club Brugge KVvsArsenal FC
👤Assistant2
2025/26
Champions League11/26/2025
Sporting CPvsClub Brugge KV
👤Assistant1
2025/26
Champions League11/05/2025
PAFOS FCvsVillarreal CF
👤Assistant2
2025/26
Europa Conference League10/23/2025
AZ AlkmaarvsŠK Slovan Bratislava
👤Assistant1
2025/26
FIFA WC European Qualifiers10/10/2025
ICELANDvsUKRAINE
👤Assistant2
2025/26
Europa League10/02/2025
Celtic FCvsSC Braga
👤Assistant1
2025/26
Europa League09/24/2025
PAOK FCvsMK MAKKABI TEL AVIV
👤Assistant2
2025/26
FIFA WC European Qualifiers09/06/2025
REPUBLIC OF IRELANDvsHUNGARY
👤Assistant1
2025/26
UEFA Europa League Play-Off Round (First Legs)08/21/2025
Malmö FFvsSK SIGMA OLOMOUC
👤Assistant1
2025/26
UEFA Europa Conference League10/26/2023
AZ AlkmaarvsAston Villa FC
🚩Assistant Referee 1
2023/24
UEFA Europa Conference League08/31/2023
BreiðablikvsFK Struga Trim-lum
🚩Assistant Referee 1
2023/24
UEFA Europa Conference League08/24/2023
Kaa GentvsApoel
🚩Assistant Referee 1
2023/24
Champions League07/26/2023
Hjk HelsinkivsMolde FK
🚩Assistant Referee 1
2023/24
Champions League10/19/2021
Club Atlético De MadridvsLiverpool FC
🚩Assistant Referee 2
2021/22
Europa League08/12/2021
Celtic FCvsFK Jablonec
🚩Assistant Referee 2
2021/22
UEFA Youth League10/21/2019
RB LeipzigvsFC Zenit
4️⃣Fourth Official
2019/20
UEFA Europa Conference League
Astana FKvsChelsea FC
🚩Assistant Referee 1
Europa League
FC Viktoria PlzeňvsHeart Of Midlothian FC
🚩Assistant Referee 1
Europa League
Mfk RužomberokvsTrabzonspor
🚩Assistant Referee 1
Champions League
Jagiellonia BiałystokvsFK Bodø/glimt
🚩Assistant Referee 1
UEFA Europa Conference League
NK Olimpija LjubljanavsLosc Lille
🚩Assistant Referee 1
Champions League
PSVvsRC Lens
🚩Assistant Referee 2
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