Battling Shrewsbury put a dent in Grimsby's play-off hopes after they came from behind to earn a 1-1 draw at home to the Mariners.
Jaze Kabia thought he had given the visitors the lead but saw his goal chalked off after he was adjudged to have strayed offside, before a first-half penalty and a stoppage-time header settled the scoring.
Vernam Penalty Punishes The Hosts
Anthony Scully struck wide of the mark on the half-hour as Shrewsbury threatened, but it was the visitors who broke through. Grimsby were awarded a penalty in the 37th minute when Jamie Walker was felled in the box.