Stuart McCall was left cursing his luck not just at the timing of Kilmarnock's late winner but the fact that Craig Slater's shot in fifth minute of injury time bobbled in front of the goalkeeper before bouncing into the net.
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The goal gave Kilmarnock a precious three points to steer them further away from the Scottish Premiership relegation play-off spot.
Until the late decider it looked as though both teams would have to settle for a point from an evenly contested and entertaining match.
As the Motherwell boss lamented the loss of a point he said: "We were not happy drawing 1-1 at home but going for the winner you leave yourself open at the back. To be fair to Kilmarnock they have already hit the bar in a break away.
"They have caught us again and it was a good strike from Slater but the ball bobbled in front of Gunnar Nielsen, who was going to make the save, and carried over him.
"It was a little bit of bad luck. I think a draw would have been a fair result but maybe Kilmarnock were due a little bit of luck.
"We played some good stuff in the first half and got some good balls into the box and missed a couple of chances.
"It was a sickener to lose a goal with the last kick of the game. If we were coming in at 1-1 we would have thought okay we could have played better."
Kilmarnock boss Allan Johnston was delighted to see his men grab a late winner to ease them further away from the relegation play-off spot.
Slater scored the winner with his first senior goal and Johnston felt his team deserved it as they battled until the final whistle.
Johnston said: "We knew it would be hard game but I thought we passed the ball well and the players showed great character.
"The first half was even but I thought we had the better possession in the second half and had better chances.
"We had lots of good performances from Alexei Eremenko in the middle of the park to the two young central defenders.
"We now need to make sure we get that kind of performance every week".
The Killie boss was also delighted to see Slater score his first goal for the club as he added: "He is a top player with a big future and his goal means so much not just for him but other young players watching him and seeing what they could do".