Danny Lennon was pleased with St Mirren's professionalism in their 2-0 victory over Brechin City in the William Hill Scottish Cup.
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The Buddies controlled the early exchanges of the match and were rewarded when Kenny McLean opened the scoring with a well struck free-kick just after the half-hour mark.
Jon Robertson added a second with a wonderful volley four minutes before half-time.
The second half followed a similar pattern to the first 45 minutes, however the home side found Brechin keeper Craig Nelson in inspired form and were unable to add to the scoring.
"It was a thoroughly professional performance, we knew there was an important job to be done today and that was to make sure we progressed to the next round," said Lennon.
"We did that and overall we were very,very good - the only thing I would say was that we weren't ruthless enough in front of goal.
"Once we got the goal it became a proper cup-tie as it forced Brechin out and we were able to pick them off.
"They made it difficult for us early on in the game, but I thought that some of our football was breathtaking at times."
Brechin boss Ray McKinnon felt the first goal was decisive in their Scottish Cup exit.
McKinnon opted for a defensive setup against their Clydesdale Bank Premier League opponents and found chances to be at a premium following McLean's opener.
"The first goal was really important, we had setup to counter-attack and a set-piece was our downfall," said McKinnon.
"Our plan was to frustrate them and force them into mistakes and I thought we did that during the first half-hour.
"I have a really honest bunch of lads and they didn't want to lose face in the second half, they gave everything they had but St Mirren were worthy winners."