GRESLEY slumped to the cusp of the Evo-Stik NPL Division One South relegation zone after their worst defeat of the season last night.
The Moatmen were beaten 5-0 away to high-flying Haleswoen Town, and afterwards manager Martin Rowe admitted: "We were spanked tonight."
After back-to-back clean sheets, and on a three-game unbeaten run in the league, Rowe's side were brought back down to earth by one of the best strikers in the division, Ben Haseley, who netted a brace in the rout.
Rowe made three changes to the side which drew with Belper Town on Saturday, with Liam Guest (pictured) replacing Jamie Barrett, and Paolo Piliero and Dean Oliver starting in place of Marc Goodfellow and Jordan Nadat.
Gresley looked a little shaky from the off with the normally reliable Ross Etheridge almost handing an early goal to Haseley.
A strongly hit backpass meant that the keeper could not pick the ball up and as he tried to play his way out of trouble, the prolific striker managed to get a toe on the ball but poked it wide of the open net.
Minutes later Etheridge made amends by denying Haseley with his legs after the frontman had sprung the Gresley defence.
Halesowen then took the lead from a poorly-defended set piece, as a corner from the right was met by the unmarked Joseph Hull, who powered his header home.
It could have been two for the homeside seconds later when former Coventry City striker Iyseden Christie hit a long-range shot, but Etheridge tipped the effort over the bar.
Gresley's first attempt came on the half hour mark but Eric Graves' shot lacked the requisite power to trouble keeper Paul Evans.
Town looked the most likely to score again but missed a good chance when Haseley headed straight at Etheridge, while at the other end, Oliver hit a shot at Evans but again it lacked power.
The hosts should have doubled their advantage on the half-time whistle, but Christie blazed his shot high over the bar from a good position.
Haseley was giving the Gresley defence a torrid time as he ran onto the high balls and his two goals within five minutes early in the second half put paid to any faint hopes that the visitors could mount any sort of revival.
The first was a little fortuitous, as Haseley got the better of Mitch Hanson and burst to the near post, where his shot somehow squeezed between the keeper and the woodwork.
Haseley's second goal was a beauty, with another long high ball over the Gresley defence superbly brought down before being smashed past the helpless Etheridge and into the far corner of the net.
Etheridge made another good block as Haseley threatened to add to his tally just a minute or so later, but Halesowen made it four when the unfortunate Mitch Hanson managed to put the ball over his own goal line.
Two minutes later the rout was completed when a low shot from the left by Elliott Turner beat Etheridge and flew into the far corner.
Home keeper Evans was hardly tested but needed to be alert late on when Gresley substitute Goodfellow curled in a free-kick which the keeper did well to turn away for a corner.
GOALS: Hull 22, Haseley 51, 56, Hanson og 72, Turner 75.
HALESOWEN: Evans (c), Green, Meacham, MacKenzie, Hull, Tilt, Martin (Griffiths 79), Tonks (Gueyes 68), Christie, Haseley (Penney 78), Turner; subs not used: Kelly, Pearson (gk).
GRESLEY: Etheridge; Hanson, Harrison, Strzyzewski, Guest; Graves (Goodfellow 68), Lyons, Jepson (c), O'Connell, Piliero (Guy 81); Oliver (Nadat 57); subs not used: Barrett, Grice.
REFEREE: John Law (Worcester).