Copnor A cruised to a 6-3 win over their B side to move to the Portsmouth Summer League top-flight summit.
Scott Compton and Mark Tillison both notched doubles for the winners.
Stacey Wearn, Den Hushley and John Shervell did well early on, keeping the score to three apiece.
However, all the doubles were gobbled up and Steve Toms kept his great run going with two frames.
Craneswater A slipped off the top as Portchester A pinched a 5-4 win at Highland Road.
Jason Tame set a fine example and Andy Macey responded with a brace.
Andy Boulton did his best with a double for the home side but his charges failed to get going apart from the consistent Mike Talmondt.
Craneswater Z beat Bellair A 5-4.
Arthur Newland showed he could still pot and Nigel Ward won both again.
Jim Hutton was another experienced cueist to roll back the years with his display.
North End Bowls and Bellair B were both happy with 7-2 away wins in division two.
The bowlers hold top spot after a 7-2 win at Leigh Park.
Colin Ricketts kept the score down as Ade and Ian Pledge hit form.
Mike Dorey ran in a 50 on the way to his double.
Alexander found Bellair B tough, with Tony May Louis, Wayne Talley and Paul Jagger all on song.
Matt Sheath and Ian Cotton gave the hosts hope before it went wrong in the pairs.
Copnor D kept their hopes going with a 5-4 at Post Office.
In division three, runaway leaders Top Spot clocked up another 8-1 triumph.
It was not a surprise with lowly Cowplain C visiting the Leigh Park venue.
Jamie Wilson upstaged father Steve with a good 50 break.
Bill Phillips and Colin Johnson set the early pace before Wilson Snr and Ben Hounsome competed the rout.
Pompey Royals are second after giving the Cuestars a lesson.
The youngsters suffered but should bounce back quickly at Cowplain next week.
Ben Tillison and Luke Dixon made a fight of it in the singles but the visitors cruised in the pairs.
Dave Chivers, the Orchards and Martin Challacombe registered their second racks.
Cowplain B edged Copnor F 5-4. Jamie and Gary Curtis were on form after stiff resistance from Barry Wooley and young Rob Derry.
– GRAHAM SIMPER