Nine-men South Shields fell to a four-nil defeat against local rivals Darlington in a National League North clash.
South Shields were reduced to ten men after just ten minutes as captain Robert Briggs saw red for denying a goalscoring opportunity.
After a goalless first half, Darlington broke the deadlock in the 72nd minute through a Will Hatfield header.
Cedric Main doubled the visitors' lead just three minutes later when he placed the ball into the bottom corner from close range.
The Mariners were reduced to nine men in 85th minute as Will Jenkins was sent off for a foul on Matty Cornish.
The lead was further extended in the 90th minute when Kallum Griffiths effort from outside the box found the bottom corner.
The Quakers added a fourth goal in stoppage time when Mitchell Curry fired into the back of the net.
South Shields made two changes from the defeat at Alfreton on Tuesday night, with Jordan Hunter and Dylan Stephenson coming into the side in place of CJ Clarke and Aaron Martin. The Mariners came into the game knowing a win could lift them back into the play-offs depending on results elsewhere.
Paul Blackett had the ball in the back of Darlington’s net in the 7th minute but was denied by the offside flag.
The visitors were given a huge boost after just ten minutes when Main stole the ball off Briggs and bared down on goal before being pulled back by Briggs who was shown the red card by referee Alex Sawden.
Darlington created a number of chances early in the second half but were unable to take advantage. Ben Liddle had the best of these opportunities but his shot from just inside the box ballooned over the crossbar.
The visitors went close again in the 68th minute through second half substitute Mitchell Curry who volleyed inches wide from inside the box after a cross from Griffiths on the right hand side.
Darlington made the pressure pay in the 72nd minute through Hatfield who pounced onto a rebound to head past Myles Boney who had saved Liddle’s shot just seconds earlier.
Hatfield was involved again just three minutes later as he set up Main inside the box who calmly slotted the ball past Boney into the bottom corner to double Darlington’s lead.
The home side’s afternoon went from bad to worse in the 85th minute when Jenkins was shown a controversial red card for a foul on Cornish halfway into the Darlington half.
Darlington extended the lead in the last minute of normal time through Callum Griffiths. The right back’s shot from just outside the area found the bottom corner to add more misery onto the Mariners’ afternoon.
The Quakers put the finishing touch on the result in stoppage time through Mitchell Curry who received the ball in the box before turning and firing the ball into the back of the net.