Sacriston leapfrogged rivals Felling to take pole position in this exciting race for the First Division title.
Visitors Washington went into the game in good form, but opener Daniel Anderson, who fired 11 boundaries in 57, led Sacriston to 201-9 declared in 47.5 overs.
Melvyn Betts bagged five fours in 42, with Graham Hubber hitting 31 off 38 balls.
Trent Mais was the pick of Washington’s bowlers, grabbing 4-46 in 14 overs, while Gavin Main took 3-61.
Washington lost wickets at regular intervals, but a brilliant partnership of 90 for the seventh wicket, between Joe Thompson (61, with nine fours) and Graeme Race (53, with three fours and five sixes), gave them hope, but they ended up just 14 runs short.
Callum Appleby (3-28) secured the three crucial wickets of Trent Mais, Thompson and Gabriel Hebron. Betts and Martin Hubber struck twice.
Second-top Felling, had to settle for a draw at home to Blaydon.
Stuart Walker’s fine century (120) and Chris Goudie (65) allowed the home side to declare on 224-1.
Second-bottom Blaydon showed some real determination in their reply, closing on 182-8, with opener Paul Underwood scoring 51 and Geoff Stewart 50, despite Paul Leonard taking 4-32.
Blaydon’s six points from their draw was good news for them as bottom club Tudhoe only took one point from their loss at Sunderland.
The Ashbrooke outfit have had a much better second half to the season and bowled out the visitors for just 114.
Kamran Hussain (4-29 in 11.1 overs), Elliot Smith (3-37) and Zaheer Shahbaz (3-40) were the main contributors with the ball, with Andrew Carrick top-scoring on 38.
Hussain then hit seven fours and a six in 41 not out to steer Sunderland home by eight wickets, supported by Ramanpreet Singh (26no), Muhammad Khalil (20) and Jonny Shurben (18).
Seaham Harbour are still not out of trouble, after their heavy defeat by nine wickets at the hands of Boldon.
The visitors batted first and only made 120, with Dale Shaw (41, with eight boundaries) top scoring.
Craig Hunter (30, with five fours) and Ian Pattison (23) provided support. Opening bowler Jack Sargon (5-37 in 12 overs) bowled brilliantly for Boldon, with Umar Waheed taking 3-26.
Chris Ellison then hit 12 fours and a six in a 61-ball 69 to steer Boldon home, with Nick Sampson-Barnes adding an unbeaten 34, with seven fours.
Burnmoor cruised to an easy win at Mainsforth, where they bowled the home team out for just 100. Aidan Cummings and Andrew Allen both made 31, but Liam Purdy (4-30) and Steven Meek (4-37) dominated with the ball.
Opener Steven Meek hit 59 to lead Burnmoor home, backed by Ross Hodgson (27), Owen Lancaster (27no) and Ross Hodgson (22).
Willington stayed third after winning a close game against Brandon by just 21 runs.
The hosts reached 236-8, thanks largely to Elliott Foster (56) and Jamie Dass (66no). Ryan Nicholson and Moin Ashraf both took three wickets.
Sairaj Raghavan stole the show with 55no as Willington secured victory, with Nicholson, Matty Brown and Gary Henderson all adding 33.
Connor Hodgson (4-93) and Calvin Stephenson (3-44) bowled well in vain for Brandon.