Competition Report

Lasse Koslowski

UEFA Europa League
Appearances
9
Assistant
9

Season-by-Season

SeasonTotalAR
2026/2711
2025/2644
2021/2211

Teams officiated

  1. 🇹🇷Beşiktaş
    2×
  2. 🏴󠁧󠁢󠁳󠁣󠁴󠁿Celtic FC
    2×
  3. AS Roma
    1×
  4. Bologna FC 1909
    1×
  5. FK Jablonec
    1×
  6. 🇭🇺Ferencvárosi TC
    1×
  7. Heart Of Midlothian FC
    1×
  8. 🇱🇹Kauno Žalgiris
    1×
  9. 🇸🇪Malmö FF
    1×
  10. Mfk Ružomberok
    1×
  11. Mk Makkabi Tel Aviv
    1×
  12. Paók FC
    1×
  13. Pfk Ludogorets 1945
    1×
  14. SC Braga
    1×
  15. 🇹🇷Trabzonspor
    1×

Venues

  1. Glasgow
    1×
  2. Istanbul
    1×
  3. Ružomberok
    1×
  4. S tadion města Plzně
    1×
  5. Tüpraş Stadyumu
    🇹🇷Istanbul· TUR
    1×

Most frequent crewmates

🇩🇪Eduard Beitinger4×🇩🇪Johann Pfeifer3×🇩🇪Robert Schröder3×🇩🇪Sven Jablonski3×🇩🇪Timo Gerach3×🇩🇪Tobias Stieler3×🇩🇪Bastian Dankert2×🇩🇪Harm Osmers2×
First in this competition
Celtic FC vs FK Jablonec
12/08/2021
View match →
Most recent
Beşiktaş vs Kauno Žalgiris
20/08/2026
View match →

Recent matches

View all →
20/08/2026 · 2026/27 · Play-off Round, 1st Leg
BeşiktaşvsKauno Žalgiris
Assistant Referee 1
12/03/2026 · 2025/26
Bologna FC 1909vsAS Roma
assistant2
19/02/2026 · 2025/26
Pfk Ludogorets 1945vsFerencvárosi TC
assistant1
02/10/2025 · 2025/26
Celtic FCvsSC Braga
assistant1
24/09/2025 · 2025/26
Paók FCvsMk Makkabi Tel Aviv
assistant2
12/08/2021 · 2021/22
Celtic FCvsFK Jablonec
Assistant Referee 2
Viktoria PlzeňvsHeart Of Midlothian FC
Assistant Referee 1
Mfk RužomberokvsTrabzonspor
Assistant Referee 1
BeşiktaşvsMalmö FF
Assistant Referee 1
Lasse Koslowski in UEFA Europa League | Referee.Observer | Referee.Observer