They went down 3-1 at home to Princeville C, their first defeat since the opening day.
Second-placed Princeville A were unable to take advantage of that slip up though, as they went down 4-0 to Pudsey A.
That allowed Princeville C to slip into second instead, three points behind the leaders after beating them so impressively.
A congested mid table is confused somewhat by the postponement of Princeville D’s fixture with Deaf Centre A, as players in both teams started their mid-season breaks early and were therefore unavailable.
Princeville B remain adrift at the foot of the table after suffering a third 4-0 defeat of the campaign, this time to Bradford Deaf Centre B.
That whitewash allowed Bradford Deaf Centre B to climb up a place to third-bottom, above their A team counterparts.
RESULTS:
PRINCEVILLE B 0 BRADFORD DEAF CENTRE B 4
PUDSEY A 4 PRINCEVILLE A 0
PUDSEY B 1 PRINCEVILLE C 3
BREAKS:
S Kershaw (Princeville B) 41; P Allan (Pudsey A) 27.
LEAGUE TABLE:
Played Points
PUDSEY B 7 19
PRINCEVILLE C 7 16
PUDSEY A 7 14.5
PRINCEVILLE D 6 13.5
PRINCEVILLE A 7 13.5
BFD DEAF CENTRE B 7 12
BFD DEAF CENTRE A 6 11.5
PRINCEVILLE B 7 8