Gladiators A are back in the hunt for the Section 2 crown after they whitewashed clubmates Gladiators B 5-0.
Bob Pincombe (5,050) saw off Richard Stowe, before Frank Cox reeled off 8,000 and Keith Gardner (7,260) made it 3-0.
Malcolm Lee (4,740) and Bert Lovegrove (3,080) then sealed an important victory.
Masons A moved three points clear at the top of Section 1 following a 3-2 victory against Masons B.
Mick Murphy (2,490-2,050) put the A side in front, only for Chris Webb to level, scoring a break of 8,260 after losing a score of 6,000.
Dave Rose (9,160) restored the A team’s advantage, only to see Dave Butt make it 2-2 with a 6,430-2,130 win against Alan Lowe.
Lewis Stratford then scored a brilliant 9,270 to seal victory.
Democrats Club are level on points with second-placed Masons B after beating Cowley Workers Club 4-1, with successes for Terry Green (4,160), John Patey (8,090), Billy Hill (7,620) and Jim Patey.
Berinsfield stretched their winless run to nine games as they went down to a 4-1 defeat by Vikings.
Alan Oliver (7,570), Mike Jones (6,560) Ian Moss (4,470) and skipper Bob Allsworth (6,060) won for Vikings, with Geoff Mace (5,510) the winner for Berinsfield.
Premier leaders Kennington stretched their lead to six points as they crushed Didcot Con Club 5-0.
Mark Trafford (12,470, break 11,050) Kevin Godfrey (7,480) Ian Gordon (8,920) Steven Sheard (18,250, breaks 10,650 & 7,600) and captain Pauline Withey, who beat Sue Atkins 4,300-2,420 were their winners.
Results Premier/Section 1: Berinsfield 1, Vikings 4; Kenn-ington 5, Didcot Con 0; Demos 4, C/Workers 1; Masons B 2, Masons A 3.
Section 2 & 3: Headington Con 3, Shelley 2; Glads A 5 Glads B 0.
CUP DRAW Team Knockout Cup Semi final: Group A: Vikings v Kennington at Headington Con Club; Masons A v Didcot CC (Gladiators).
Group B: Gladiators A v Marlborough (Kennington Club); Gladiators B v Comrades (Democrats).
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