Young Boys and CSKA Moscow looked set for a deserved 0-0 draw in Leg 1, until Kasim Adams nightmare 90' own-goal.
APOEL scored two goals in the first ten minutes to beat Slavia Praha 2-0 in the first leg of the Champions League qualifying round.
Hoffenheim scored a late goal to give them a puncher's chance against Liverpool heading to Anfield for the second leg.
Trent Alexander-Arnold scored his first Liverpool goal as Jurgen Klopp's side took a 2-1 lead in their Champions League qualifier against Hoffenheim.
Trent Alexander-Arnold scored his first-ever Liverpool goal in fashion with this well taken free kick.
Simon Mignolet denied Andrej Kramaric's weak penalty to keep Liverpool level with Hoffenheim.