DUMBARTON manager Stevie Aitken has admitted his side only have themselves to blame for last Tuesday’s 1-0 extra-time defeat to Queen’s Park in the Petrofac Training Cup.

It was Sons second cup defeat of the season to League Two opposition after their penalty shoot out defeat to East Fife in the League Cup.

Garry Fleming missed a penalty for Dumbarton in the dying moments of normal time — before Andy Graham was caught in possession on the edge of his own box and Joe Bradley scored the only goal of the game at Hampden to put the Spiders in the quarter-final.

With only Rangers, Livingston and St Mirren the only Championship representatives in the last eight, Sons will look at it as a major chance for an extended cup run gone to waste.

Indeed Gus MacPherson’s Queen’s Park were rewarded with a home tie against Elgin in the next round.

Sons boss Aitken was frustrated that his side could not reach the same level of performance they managed in the first two league games.

He said: “The performance was not what it should have been, that’s why we are out of the competition. We had an opportunity to win it and never took it, then we were sloppy in the goal that we lost.

“It was all our own doing. But it’s gone now, we just have to put it to the back of our minds and concentrate on the league.”