Dunnington won their tenth consecutive match to keep pole position in division one of Tyke Petroleum Men's Tennis League.
They defeated Wigginton 71-37, with Kevin Todd and Mike Taylor rattling up 25 games.
Ian Driffill and Jonathon Sharp scored 26 of Bubwith's 65 games against York, who remain bottom with two matches to play.
Sutton-on-Derwent head division two with matches in hand after beating Castlegarth 76-32, Peter Thomas and Chris Hobson winning 30 games.
Strensall beat Copmanthorpe by two games to move into second place. After 96 games Copmanthorpe were two up, but allowed Matt Ward and Jeremy Williams to score nine.
John Logan and Nick Robinson scored a rare 27 for York II in the 64-44 win over Sherburn.
Cawood secured their position in division three with a 64-44 win against Wilberfoss thanks to 29 games from Neil Hepworth and Terry Savage.
Dunnington II had a useful 63-45 win over Poppleton III, picking up 24 of the last 36 games. Mike Jenkins and Chris Bowles were top scorers with 24.
The last unbeaten record disappeared when Boston Spa lost in division four at Wigginton II despite Sephton Baxter and Gordon Milne top scoring with 28 games. Les Almond and Mike Ambler won 24 games for Wigginton.
Castlegarth cemented second place with a 74-34 win over New Earswick. Adrian Bury/Stuart Robinson and Ian Teasdale/Niall Wood both won 25 games.
Bottom team Appleton Roebuck II have games in hand but a hard programme ahead. Despite 19 games from Tom Shouksmith and Denis Farrant, they lost 45-63 to Heworth, whose Andrew Ward and Ron Barnett scored 28.
Knaresborough II can now only lose the division five title on games after beating Cliffe 62-46.
Selby sealed promotin by winning 67-41 at Riccall II. Fran Milivajevic and Steve Parr scored 25.
Rufforth dropped to next to bottom after being hammered 84-24 by Sutton II.
Updated: 12:55 Tuesday, August 14, 2001
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