Thursday 24 September 2015 00:05, UK
Ronny Deila admitted Raith gave him a few nervy moments in their League Cup third-round match before Stefan Johansen's late strike sealed Celtic's 2-0 win at Parkhead.
Midfielder Kris Commons gave a much-changed home side the lead over the Championship side in the 32nd minute with a trademark 20-yard thump.
However, the Cup holders huffed and puffed and survived a few late scares before Johansen's 87th-minute clincher put them into Monday's quarter-final draw.
Deila said: "I am always a little bit worried. You never know in football and the cup is always like that. When it is 1-0 anything can happen but I think we were in good control and it was good that we got the second goal.
"When you meet a team from a lower division it is always difficult because they gave 110 per cent and sometimes it is easy to get a bit lazy, if I can say that.
"But I think our players worked really hard for 90 minutes. We kept the pressure on all the time and could have scored more. We kept another clean sheet which is very important.
"But every team can get one chance and they (Rovers) should get credit for hard work and defending very well. But I am happy with the win and we deserved it."
Deila's changes included 18-year-old left-back Kieran Tierney, who produced an assured display.
His manager said: "He has come a long way in a short time, 18-years-old to perform like that is very good. He will be important for us in the future."
Croatian Jozo Simunovic sat out the second game in a row but Deila added that the defender's twisted ankle is not serious and he could be back in time to face Hearts on Saturday.
Rovers boss Ray McKinnon claimed his side's battling performance made it a "bitter-sweet" evening.
He said: "We had a few great chances, one in the first half and a couple in the second so it would have been nice had one gone in and taken it to 1-1.
"I was really pleased with the boys, this is a tough, tough place as almost everyone will find this season. The players worked really hard to keep us in the game to allow us to go and have a bash at them in the last 20-25 minutes. I felt that we had them rocking then.
"So I am really pleased with their performance. It is bitter-sweet night, definitely."
