Sun stormed to the top of the York White Rose Ladies League division one after beating Vaults 7-2.
Rookie Lisa Harrison put the Acomb team in a commanding 4-1 lead, and Audrey Scorfield (134) clinched the match with the next game.
Burton WMC remain unbeaten following a stylish 6-3 victory over Crescent - Lillian Coombs securing the match.
Maureen Tindall put Institute 3-1 up, but consecutive wins by Pauline Helm, Pauline Purvis and Samantha Jamieson, gave Palace the lead.
Institute's Janet Baron levelled to set up a thrilling last game decider and it was Jan Welby who came out on top to give Palace their first win.
Clarence won a tight encounter against Earswick to go joint top of division two with Fulford Conservatives, who surprisingly went down 5-4 to Six Bells.
Tap trounced Bumper 7-2 to get their campaign back on track, Judith Stark ensuring the victory, while Bowling's Dot Houlden proved to be the winning factor over Post.
In division three, Maggie Adamson and skipper Jill Clapham inspired Coach to a 6-3 win at Nags Head.
Shanter are just a point off the pace after taking the first seven games at Tankard.
Angela Forth settled the match, while Tankard's Vikki Le-Monnier and skipper Sally Umpleby saved face for the Rufforth side.
Jim Hawksby shot out in 20 darts for Beeswing in York John Smith's Mixed League division one.
However, Punch Bowl came on strong with Gary Richardson and Liza Moore putting in good performances in a 7-2 victory.
Cygnet 'B', with the help of 21 darts from Dave Smith, beat Slipper 'B' 5-4 - Keith Graham partnered Liz Powell to win the decider.
Windmill, who narrowly lost to Escrick, had Nick Harteveld closing 87 with two darts. Andy Swann and Margaret Bell secured the 5-4 result.
Freda Metcalfe closed on 103 in the pairs with Julie Coyle for 24 darts as Brigadier notched a 6-3 win over Wenlock in York John Smith's Ladies League division one.
Cindy Benton produced a ton finish as Vaults steamrollered Ox 7-2.
City Arms had Angie Hields in good form as she included a 140 and a ton for a 21-dart pairs game with Sue Smith.
Three Cranes had to wait until the last game to register a point, Babs Harrison throwing two 120s.
Layerthorpe's Tina Platt hit two ton scores and, with Pat Thomson, won the decider at Cygnet.
Sharon Neads and Sandra Fairclough gave Clifton a last game victory at Puss 'n Boots.
Angie Read hit the big scores for Shepherds, but it was Slipper's Rachel Bell and Gill Harley who snatched the win as the top teams in division two lost their way.
Cygnet wilted in the singles against Severus, who had Mavis Gallimore and Val Long playing well.
Dot Trousdale helped Half Moon to a good win against Dringhouses and Joan Harrison and Chris Garbutt sealed the win for Britannia 'B' against their 'A' team.
Jenny Barron gave division three's Burton the start they wanted, but Leeman bounced back to run out 6-3 winners. Clifton recorded the same margin win against Slip.
Wendy Smith scored well for Mitre before Jubilee hit back to go into the pairs 4-2 in front. Nevertheless Carol Pearson and Mandy Watson took the decider for Mitre.
Woolpack's Kath Powell and Sharon Nelson secured the match against Tang Hall WMC, while it was the Mount players who hit the tons but Poacher found the doubles to win the match 6-3.
Beeswing recorded their first win, Janice Potts and Debbie Hadfield winning the decider against Leeman 'C'. Division four leaders, Queen, had Sue Baker and Colleen Cunniff sealing the win against Frog who pushed them all the way to a 5-4 result.
The Marston Moor League has got under way, but with a revamped format.
This season they are playing with just one division of 12 teams, but the opening round of matches produced some sparkling scoring with Dave Ingleby, of Long Martson Sports Club, bagging a 120 and Nick Brown, of Poppleton's Lord Collingwood, had the highest check out on 79.
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