Boldon cruised to an impressive seven-wicket success against visitors Blaydon in the First Division on Saturday.
The visitors could only manage 95 all out.
Geoff Stewart topped the scorecard with 30 runs, but the man of the match was Boldon bowler Ian Pattison, who took 5-19 in a terrific spell, with Anthony Brown chipping in with 3-28.
Boldon lost two quick wickets in their reply, but soon knocked the runs off, as Umar Waheed hit four boundaries and a six in reaching 37 not out and Oliver Sampson-Barnes hitting six fours in a 34-ball knock of 39 not out for the Sunderland Road side.
Seaham Harbour batted poorly and paid the price with a costly nine-wicket defeat in their battle at the bottom with Mainsforth.
Neither side had managed a win before the start, and Mainsforth were the ones to be celebrating by the end, securing their first victory of the campaign.
Harbour struggled to 96 all out, with Andrew Stevenson top-scoring on 25, with only Adrian Hedley (17) and Niall Cowell (12) reaching double figures.
Mainsforth’s Curtis Bihari took 3-20 and there were two wickets each for Ryan Dawson, Anton Muller and Robert Chismon.
A quickfire 46 not out from Robert Chismon, supported by Muller’s unbeaten 42, eased Mainsforth home to victory in the 20th over. Nathan Corkhill took the only wicket to fall.
Washington were blown away in their home clash with Burnopfield, who ran out six-wicket winners in double quick time.
None of Washington’s top six reached double figures as they slumped to 3-3, 8-5 and 19-6. Ashley Thorpe (20), Joe Thompson (13no) and Graeme Race (12) added a semblance of respectability before the end came on 67, with 28.2 overs bowled.
Callum Thorp grabbed 5-12 in nine overs, backed by Gareth Breese (4-19).
Burnopfield found bowler Malinga Surappulige (3-28) hard to handle, but they won with 70-4 in 19 overs, with David Baxter (22no) top-scoring.
Sunderland nearly won, but could not force the last wicket against Burnmoor.
The Ashbrooke side batted first and made 149 all out, with Muhammad Khalil hitting 42. Burnmoor looked on course for victory when they reached 103-3, but they were hanging on with 142-9, just eight runs short of victory themselves.
Sacriston lead the way at the top after six completed matches, holding a 14-point lead after they won at Willington by five wickets.
Willington batted first, making 185-5, with opener Joe Cooke hitting 32 and Jake Louth top-scoring with 59. Towards the end of the innings, James Stock added 32 vital runs.
When Sacriston batted, they were always in control, with opener Daniel Anderson making 31 alongside Reece Carr’s 51 and then unbeaten contributions from Graeme Wrightson (32) and Lewis Straughair (30) saw Sacriston home.
Brandon are second, after a winning draw at Gateshead Fell.
Gordon Muchall was out one run short of a century when Brandon posted 181-5, backed by Matthew Brown (44) and Chris Peareth (19), while Cameron Oliver struck twice.
Fell struggled to 54-5 in their reply before defending successfully to see out the draw on 105-6, thanks largely to Richard Smith (53) and Robery Stacey (21no).