Oakham United ended their season with a 2-1 loss at Leverington on Saturday but still look likely to finish in the top five.
United sit fourth in the Peterborough and District League premier division after their final game but Peterborough ICA have a series of delayed games to play and - on recent form - will move above the Rutlanders.
Crowland have one game in hand but would have to beat Parson Drove by a wide margin in their final fixture to leapfrog United.
Joint manager Pat Johnson said: “Sixth is the very worst we can finish and if, at the start of the season, you had said that is where we’d be, I’d have taken it.
“But we need a more setteld side and we need to attract more players. We only had three players on Saturday who began the season. Myself and Karl Seagrave had to play. We’re both in our 40s - so to lose 2-1 wasn’t bad.”
Nathan Arkle pulled one back for Oakham who trailed 2-0 at the break.
l In the first division, sixth-placed Ketton took point from a goalless draw at fourth-placed Thorney.
The Pitmen will move to at least fifth if they win their remaining two games.