On the way to the 2001–02 UEFA Champions League final , Bayer Leverkusen lost 5-1 against Arsenal but eliminated them in the second group stage .
Bayer Leverkusen eliminated all three English teams on their way to the final : Arsenal ( Leverkusen losing 5-1 on head to head ) in the second group stage , followed by Liverpool in the quarter-finals and Manchester United in the semi-final .
2001–02 UEFA Champions League