The Gunners looked to have blown their chances when Dan Parks put the visitors ahead for the first time two minutes from the end of a pulsating Murrayfield clash.

But ex-Warriors full-back Ben Cairns plunged over in stoppage time with Glasgow claiming Nick de Luca’s pass had gone forward.

Blair said: “Maybe it was a bit dubious with a hint of a forward pass but the referee penalised us for one that didn’t go forward in the first half.

“He was maybe just levelling things up. It was a horrible feeling when Parks went over for his try because we had been leading all game but we knew there was still a bit of stoppage time to come.

“Edinburgh v Glasgow games have been a bit dire over the last few years but it was magnificent entertainment tonight (Friday).”

But Glasgow coach Sean Lineen reckoned his side only had themselves to blame for the heartbreaking defeat.

He said: “We made some silly mistakes and Edinburgh capitalised. Our whole pack was below par and in retrospect I made a couple of selection errors.”