Due to a combination of injuries, illness and work commitments, Blyth went into their game against bottom of the table side Ponteland showing five changes in the starting XV plus another three on the bench, and they almost came unstuck.
For a change Blyth were first on the scoreboard when a good break by the backs put Owen Jarvis in for the first try after only four minutes.
Another break was stopped just short of the line, but from the resulting lineout the ball was moved to the opposite wing for Chris Grey to score in the corner.
Ponteland enjoyed a period of possession but could not turn this into points and mistakes allowed Blyth to counter attack.
Strong runs by Nick Fraser and Sutherland almost resulted in further tries.
A penalty to Blyth was kicked to touch and good lineout ball allowed Sutherland to score, unfortunately he left his kicking boots at home as he missed the third conversion in a row.
Ponteland managed a try from a scrum just before half-time to leave the score 15-5 to Blyth at the interval.
A superb break by Sutherland and Bostock with inter-passing on the wing almost resulted in a try, but the final pass was adjudged forward.
Ponteland pulled the score back to 15-12 with a try from a scrum, but Blyth sealed the win and gained a four-try bonus point when they won a scrum ten metres out and flung the ball wide for Bostock to score, the conversion was missed again.
Ponteland hit back and managed a penalty in the last second to gain a losing bonus point, which might prove invaluable in their fight against relegation.
Next week Blyth travel to Bishop Auckland for the last league game of this year, with a 2.15pm kick-off. Supporters note the bus leaves at 11.30am.