Half time: Darlington Mowden Park 26 Fylde rugby 8
Fylde trailed at half-time in this National League One encounter and were left looking their shoulders at two rivals at the foot of the table.
While Fylde struggled in the first half in the North East, Blaydon put the frighteners on Fylde as they enjoyed a 24-21 lead over Cambridge.
Another of their rivals in the lower reaches of the league standings, Hull Ionians trailed narrowly 15-13 at the hands of Rosslyn Park.
Fylde's points in the first half came from a Greg Smith penalty and a Matt Lamprey.