The Instow side slumped to their eighth loss of the season on Saturday, losing to Torquay by 43 runs.
North Devon are hovering over the Premier drop zone after a 43-run defeat by Torquay.
The Instow side are 19 points clear of the relegation spots with Bovey Tracey to play this Saturday.
Skipper Barney Huxtable said there is no panic in the dressing room among the players, just a determination to play their way out of trouble.
“We know we need to win one or two games to be safe and we back ourselves to do so,” said Huxtable.
Torquay went along at a brisk pace in the first 12 overs, reaching 52 for three with Mitch Pugh, Reid Mawdsley and Sach Galhenage the men out.
Josh King (2-46) and Stef James were the bowlers who did the damage.
Skipper Yau went in at 46 for two after Mawdsley was caught behind and batted through to the final over for his 115.
Along the way there were stands of 90 with George Allen – he made 53 quicker than run a ball – 66 with Nick Watkin (35) and a couple of 30s with Jack Richardson and Kazi Szymanski.
Kyle Verreynne (3-68) got among the wickets in the latter overs as Torquay had a swing on their way to a total of 287 for nine.
North Devon were faced with scoring at nearly six an over to win – and kept to it for a while before Pugh and Galhenage slowed them up.
Opener Tom Ansell (48) was an early anchorman for North Devon with skipper Barney Huxtable (47) keeping the chase going,
Huxtable’s stand of 80 with Brett Mason (58no) got North Devon up to 169 for five, but by then the asking rate was in eight-an-over territory.
Mason batted through to the end, but with no one making more than 11 in the lower half of the order North Devon finished well adrift on 244 all out.
Watkin (3-46) got among the tail to hasten North Devon’s demise.
Losing captain Huxtable said: “There were loads of positives to take from Saturday.
“Jack Gibbs bowled really well and looks an exciting prospect.
“Gloucester 2nd XI are having a look at him, which does not surprise me.
“Brett Mason batted fantastically it was just a shame someone wasn’t able to stick around with him.
“Justin Yau batted really well for Torquay and thoroughly deserved, his match-winning hundred.”