Dave Rees helped Cowplain A bring Craneswater’s winning sequence to a halt in the top flight.
The Welsh wizard beat star-man Mike Talmondt 2-0 at Southsea to leave it all square at 6-6.
Russ Linkhorn also won both to put the runaway leaders under pressure before Tony Hansford and Rob Kirby saved the day.
Al’s Club found their touch again and thrashed Emsworth 9-3.
Home skipper Mark Kingswell beat opposite number Chris Hardyman to set the ball rolling.
It was soon all over as Matt James and Matt Hannam followed suit.
Copnor A lost 8-4 to Craneswater Z at home.
The Southsea gang took control early on as Nigel Ward, Mark Turner and Mark Jones potted everything.
There was late relief as Steve Toms pulled two back against Simon Petrie.
Cowplain Z also enjoyed themselves with an 8-4 over Leigh Park A.
Home trio Steve Hughes, Heath Smith and Andy Hall started well.
But Bill Parsons replied with two late frames against Dave Parsons.
Promoted Craneswater Q lost 7-5 as Copnor D got back into their stride.
Stu Calver got a couple for the strugglers but Tony Simmons and Tony Bushnell had done the damage.
Bellair A are 10 points ahead in division two.
However, their B team gave them a hard time before losing by the odd frame.
Tony May and Paul Jagger kept it close before Greg Jones, Lee Harding and Phil Skinner shaded it 7-5.
Copnor E held their nerve in two black ball games for a 7-5 win over Craneswater R.
Andy Carter was on target for the visitors after great early play by veterens Pete Rook and Dennis Hushley.
Carl Fuggle registered a 41 break as Cowplain Gas drew at Broadoak.
Gerry Wheeler and Steve Scott scored for the former SESA outfit, with the latter rolling in a 38.
Gary Kirby and Paul Lees were the best for the gasmen.
North End Bowls and Alexandra shared the points.
Colin Elliott and Ade Pledge were the home stars and Karl Davies and Dave Harfield replied.
Jon Challacombe was on song with a break of 45 as Pompey Royals stretched their lead in division three.
Steve Orchard, Paul Chivers, and Paul Tinsley also contributed to a 9-3 triumph at Cuestars.
Daniel Compton kept the score down with a handy 30.
Copnor Xcels lost 7-5 at Craneswater Dandy.
Captain Rob Dandy and Ioan Moon notched home wins, while Wayne Laxton got two for the visitors.
Copnor F fared better with an 8-4 at Leigh Park B.
Dave Riddell was a home winner before Gary Green, Rob Derry and Rob Derry Jnr collected a brace apiece.