Whitby’s batsmen were punished as Thornaby picked up a three-wicket win at the Turnbull Ground on Saturday.
The hosts only mustered 131 in their North Yorkshire South Durham Division One clash, and the gap between the two sides, who are third and fourth in the table, is now 55 points.
Will Donald made 61 at the top of the order, but James Fawcett and Paul Buck were the only others to get into double figures.
An outstanding 11-over spell from Thornaby’s Luke Metcalfe brought him 5-19, and Paul Allen picked up 4-37.
Despite the reasonably low target, it took the visitors more than 55 overs to reach the winning line.
Opening bowler Chris Lyth removed the top three batsmen as he collected 3-22, and although Donald and James Hall took two wickets, Thornaby’s Adam Hill and Danny Wade completed the run chase.
Whitby 2nds’ found batting easier, as they overhauled Darlington 2nds’ 222 at Feethams in Division Two.
The home side won the toss and chose to bat. Keeper Jonny Pears (40) and Callum Lethbridge (38) set the ball rolling and 48 from number eight Oliver King got Darlington towards a decent total.
Corey Hart was the top Whiby bowler with 3-35 but Stephen Crowther, Andrew Marshall and Mark Jackson all picked up two wickets.
After tea, runs from Matthew Towey (42) and keeper Jack Lyth (53) gave Whitby a positive start but it was captain Andrew Wood who stole the show.
He was unbeaten on 64 as Whitby won by three wickets in the 52nd over.