Jersey Bulls' promotion hopes ended with penalty shootout at Springfield.
Visitors AFC Whyteleafe won 4-3 on spot kicks after the play off semi final ended goalless at full time.
The match was paused seven minutes into the second half when the floodlights failed. It resumed after a break of around half an hour.
The Bulls had been aiming for Friday's play off final, and a second successive promotion.
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Elsewhere, AFC Croydon Athletic beat Sittingbourne 2-0 in the night's other semi-final/
The results means Whyteleafe will travel to Croydon on1 May to battle it out for a place in Isthmian League Premier Division next season.
Jersey Bulls say finishing third in the Isthmian League South East in their first year in the 8th tier of English football is an 'incredible' achievement.
It is the highest ever finish by a Channel Island side.
"We are so unbelievably proud of this team for what they have achieved so far this season!
"To finish 3rd after only being promoted to this league this year, is incredible.
"To every single player and management, thank you.
"And to every single supporter who’s supported from near or far this season, a big thank you too."
Fans have hailed an 'amazing season':
"So very proud of Jersey Bulls, an amazing achievement to come third and pipped so close at the final hurdle. Rest up and go again ! COYB!"
"You’re fantastic and we’re so proud of each and everyone of you, thanks for a brilliant season. More to come Bulls! 
"
"Incredible effort all season long. Done the island incredibly proud home and away 
"
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