Worthing know their potential path to promotion after securing their highest ever league position.
Rebels finished third in Vanarama National League south after winning 4-2 at home to Weston-super-Mare on a celebratory afternoon.
They were only one goal from pipping Chelmsford to second spot behind champions Yeovil.
A top-three placing allows Worthing a bye in the first play-off round and home advantage in the semi-finals.
They will host Maidstone or Aveley at the Sussex Transport Community Stadium next Sunday at 3pm.
The other semi sees Chelmsford host Braintree or Bath City.
The final takes place on Monday, May 6 (3pm) at the home of whichever team have finished higher.
So, should they get through, Worthing would travel to Chelmsford or visit Braintree or Bath.
They will know their semi-final opponents on Wednesday night.
The win over Weston-super-Mare was watched by 2,533 - a record regular-season National League south attendance for the club.
They bounced back from conceding an early goal to take the points through goals by Brad Dolaghan, Jack Spong, Ollie Pearce and Joel Colbran.
Pearce was named both manager’s player of the year and also received the prize voted for by fans.
Joe Felix was players’ player of the year and Danny Cashman was young player of the year.
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