Kilmarnock 1-5 Celtic:  Celtic marched into the quarter-finals of the Scottish Cup with a thumping 5-1 win over Kilmarnock at Rugby Park.

The holders dominated throughout and could have won by an even clearer margin if they had taken all their chances.

Celtic broke the deadlock on 22 minutes when Paul Caddis crossed for Scott McDonald to score from close range.

Gordon Strachan's men had to wait until the second half to double their lead with Gary Caldwell heading home on 52 minutes with a rare goal.

Jan Vennegoor of Hesselink added a third just before the hour mark when he coolly slotted home Aiden McGeady's pass after Celtic caught Killie on the break.

Jamie Hamill pulled a goal back for Killie on 66 minutes with a fine header from Danny Invincibile's cross.

Celtic restored their three-goal cushion almost immediately with McDonald netting his second of the contest a minute later.

Georgios Samaras came on for his debut soon after and the Greek international marked his bow with a fine solo goal five minutes from time to round off a good day at the office for Celtic.