The league leaders Hockwold take a 12-point lead into the final match, which by coincidence is against their nearest challengers Snettisham.
Captain Roy Bland top scored with 107 with good support from Michael Hammond with 37 as Hockwold reached 215 for 8.
With ball in hand, Roy then took 5 for 17 as nine-man Northwold were bowled out for 67.
Snettisham piled on the runs scoring 279 for 3 with 88 from Matthew Herbert, 69 from Lewis Jeavons, 45 from Jonathan Forder and an unbeaten 44 from Ryan Twiddy.
Shane Fisher scored 36 as Hillington were bowled out for 142 with Ryan Twiddy taking 3 for 5 and Nathan Jeavons 3 for 34.
Heacham recorded their first win of the season with a 103-run victory over Castle Rising. Anthony Sadler scored 80, Matthew Blake was unbeaten on 72 and Duncan Rix scored 49 as Heacham amassed 245 for 4 in their 45 overs.
Duncan Rix took 4 for 27 as Castle Rising were bowled out for 142 with Darren Clarke unbeaten on 26.
Sandringham bowled out Denver for 127 with Callum Lee taking 4 for 19 and Chris Smith 3 for 36. Opener Dan Harper top scored with 56.
Dan Cornwell took 4 for 21, but an unbeaten 35 from Adam Burch saw Sandringham home to a narrow victory by four wickets with one ball left in the match.
With the merger with the Norfolk Cricket League planned for next year, the provisional finishing places will see the Division One champions take their place in the Norfolk Cricket Alliance.
This is the only finishing place still to be decided next weekend, when Hockwold visit Snettisham. Positions three to five are already confirmed as there is a 34-point gap between fifth and six place, so Sandringham, Castle Rising and Denver will be placed in Division One of the re-structured and regionalised NCL.
Positions six to eight, i.e. Northwold, Hillington and Heacham, will be placed in Division Two (West).
Everything is still to play for at the top of Division Two as all three challengers for the title won this week.
Gooderstone still have it in their own hands with a maximum point win against Hospital. Batting first, Gooderstone scored 222 for 6 with Kevin Bandy unbeaten on 64 with good support from Glen Fossey with 31.
Opener Owen Chander scored 33, but then Andy Dixon with 3 for 10 and Mark Chalkley with 4 for 21 bowled out Hospital for 97. AMBiT Projects MoM for Hospital was Aseem Sharma with his 22 runs and taking 2 for 34.
Narborough A are now 14 points behind Gooderstone as they beat Downham B by 12 runs. Narborough A scored 159 all out with Matthew Coe scoring 59 and Daniel Yeates-Cornwall 51. Simon Brooking took 4 for 29.
Gary Hooker scored 44 and got Downham B off to a good start. Jack Crisp took 6 for 26 to ensure Narborough A successfully defended that total, by bowling out Downham B for 147.
Castle Acre scored 182 for 6 with Dean Wall top scoring with an unbeaten 59. Fakenham 3rds were bowled out for 105 in the 39th over to lose by 77 runs. Castle Acre are now 18 points behind Gooderstone, but they do have a game in hand.
They play Gooderstone in what could be a title decider tomorrow.
Sandringham A scored 136 all out with Bradley Tennant top scoring with 52. Liam Chanel was the pick of the bowlers taking 4 for 21.
Robin Thaxter hit an unbeaten 50 to see Holt through to victory by six wickets in the 42nd over with Cameron Bear taking 3 for 28.
The top three are battling for the top two positions, which will take their place in Division Two (West) of the NCL next season. Downham B will finish eighth and they will be placed in Division Four (West). Positions three to seven will be placed in Division Three (West).
It’s very close at the top of Division Three as only one point separates Dersingham A and Bircham A.
Dersingham A missed the chance to extend their lead as they lost to third placed Snettisham by 77 runs.
Batting first Snettisham A reached 122 for 9 with Olly Southgate taking 3 for 37. Daniel Cook took 4 for 5 and Paul Ingram 3 for 14 as Dersingham A were bowled out for just 45.
Robin Tuck took 4 for 21 as Swaffham A reached 196 all out in exactly 45 overs with five batters reaching 20, but none of them going past 25.
Craig Hughes scored 84 and Dinesh 34 as Bircham A went on to win by four wickets in the 42nd over.
Taz Verma scored 30 in Castle Rising’s total of 131 for 7 with Neil Farrow taking 3 for 25. Steve Hayes took 5 for 32 as Gooderstone A were bowled out for 112.
Richard Simpson took 4 for 25 as Gayton were bowled out for 79. Mark Tilbrook took 4 for 23 as Denver A went on to win by 3 wickets.
Mathematically Snettisham A could still finish in the top two, but they will certainly have a bearing on where the title ends up as they play current leaders Bircham A next week.
Dersingham A visit Gooderstone A in their final match.
The top two will be placed in Division Three (West) with the remaining teams in Division Four (West).