Chesterfield Panthers endured their first home defeat in the Midlands 4 East (North) since November on Saturday.
The Panthers were edged out 13-15 by their high-flying visitors East Retford before the worst of Storm Ciara hit the region.
It was the second setback in as many weeks for the Chesterfield side who had strung a five-game winning run together through January.
The sixth-placed Panthers travel to Gainsborough, who are just a point and one place behind in the standings, this weekend.
Elsewhere in the division Amber Valley were also beaten at home, losing 6-33 to third-placed Meden Vale. They visit North Hykeham on Saturday.
While Tupton ran out 17-12 winners at home to North Hykeham thanks to two tries from James Blakey, one from Cain Holmes and a conversion by Sam Curry.
In a classic tale of two halves, Tupton were leading 17-0 at the break before their Lincolnshire opponents fought back after the interval.
Tupton visit Nottinghamians on Saturday.
There were defeats for both Buxton and Belper on the road in Midlands 3 East (North) last weekend.
Buxton fell to a 26-61 loss at third-placed Mellish while Belper were well beaten 7-60 at second-placed Southwell.
The two Derbyshire sides go head-to-head this coming weekend as Belper host Buxton and Bakewell Mannerians are home to Grimsby at Shutts Lane.
In Midlands 2 East (North), Dronfield host Coalville, Matlock welcome Loughborough and Ilkeston are at home to Ashfield.