Teenager Alex Storey collected the best figures in his cricketing career on Saturday to put the skids under Greenside and spearhead Ashington seconds to a crushing ten wickets win.
The 16-year-old right arm medium pace bowler took 6-13 as the visitors were dismissed for 28.
Experienced campaigner Michael Levison then struck an unbeaten 21 as the Langwell Crescent side raced to victory from ten deliveries.
Colliers skipper Doug Potts said: “I won the toss and asked Greenside to bat and things could not have worked out much better.
“Alex (Storey) operated up the bank and bowled a really good line and length – and on the stumps.
“He bowled his first four victims then had one caught behind and one caught in the gully.”
The victory put the Colliers out in front at the top of the B1 table as they hold a 49 points cushion over second placed Tynedale.
But an ever cautious Potts remained unmoved on his outfit’s championship push.
“I’ve played this game too long to start predicting what might and might not happen,” he said.
“What I do know is that we have four games remaining and they will be our hardest of the season.
“We need to keep our discipline and continue to do what we’ve done so far this term and see what we get.
“Yes we are in a good position but we are certainly not counting any chickens.”