Hearts of Midlothian suffer shock exit to Birkirkara, Aberdeen see off Ventspils, Hibernian lose on penalties to Brondby.
Ludogorets Razgrad's Champions League dreams came to an early end on Tuesday as they bounced out of the competition in the second qualifying round.
Two of last season's Champions League group-stage underdogs got off to a rough start in the first leg of the second qualifying round on Tuesday.
Irish champions St Patrick's are out of the Champions League after a 5-0 defeat saw them lose 6-1 on aggregate to Legia Warsaw in the second qualifying round on Wednesday.
St Patrick's were denied a shock Champions League victory over Legia Warsaw after conceding a stoppage-time equaliser in the first leg of their Champions League second qualifying round in Poland.