Port Vale’s draw with Grimsby on Saturday was overshadowed by crowd trouble in the closing stages.
Manager Neil Aspin made two changes bringing in Anton Forrester and Marcus Harness.
It was a dull opening until Vale took an early lead when David Worrall drilled home for his fourth goal of the season. Worrall almost doubled his tally minutes later when he hit the post.
Anton Forrester’s header forced a good save out of the home keeper as Vale looked to double their advantage.
In the second period, Vale missed a golden opportunity to stretch their lead when Anton Forrester was brought down in the box but Michael Tonge’s penalty was saved.
The home side nearly made Vale pay but Ryan Boot made a fine save to keep the Valiants in the lead.
Sub Tyrone Barnett then forced a save out of the keeper and in the resulting play Vale were awarded a free-kick in the area which came to nothing.
Aspin’s team were made to rue those misses as Grimsby equalised in stoppage time thanks to Berrett. The goal provoked ugly scenes as fans entered the playing area. It caused a delay to the game.
When play resumed it was largely uneventful in a match that will do neither side any favours and which could earn both clubs sanctions from the FA.
Vale: Boot, Davis, Smith, Howkins, Montano (Gibbons), Harness, Tonge, Pugh, Hannant (Whitfield), Worrall, Forrester (Barnett)
Subs: Hornby, Wilson, Raglan, Howe