Gateshead 2-3 Southport
Gateshead surrendered a two-goal lead in the final 25 minutes to drop out of the play-off positions in the Blue Square Bet Premier for the first time this season.
In-form Southport stormed back to claim a stunning victory and move above the Tynesiders in the table.
Gateshead looked to be heading for victory when strike pair Jon Shaw and Yemi Odubade scored in quick succession.
Apart from that five-minute spell midway through the half, the opening period was a tight affair with Southport a threat from set plays.
Andy Owens' long throws were the Sandgrounders' most potent weapon, but the Heed defence held firm.
On-loan Newcastle debutant Jak Alnwick made the first save of the game when he tipped Tony Gray's shot past the angle from another Owens long throw.
Odubade miscued inside the box and on three occasions a through-ball was cut out just before it reached its target.
Southport, looking for a sixth straight away win, were then undone when the league's leading scorer Shaw broke the deadlock after 22 minutes.
Timing his run to perfection, Shaw ran on to another Magpie loanee, Jeff Henderson's measured long ball out of defence.
A left-foot low drive from just inside the box arrowed into the bottom corner - Shaw's 15th goal in 16 games this season.
Four minutes later it was two. Great interplay between Kris Gate and Chris Carruthers on the left opened up the Port defence.
Odubade was then on hand to convert Carruthers' low cross from inside the six-yard box - the former Oxford and Stevenage man's first goal in nine games.
Simon Grand headed an Owens throw onto the roof of the net and then Shaun Whalley volleyed over the bar after Carruthers had headed clear.
Josh Gillies volleyed just over after the break while Whalley's chip at the other end drifted just past the far post.
The dangerous Whalley then cut inside to fire a shot from the edge of the box that was deflected wide by Henderson.
Gateshead carried little attacking threat, but were generally keeping Port at bay - until Karl Ledsham's angled ball set up Whalley who finished clinically from the right side of the box.
A mistake by James Curtis then saw Ledsham race clear only to shoot wide of the far post but confidence was now coursing through the Sandgrounders veins.
The Heed had been content to sit on their two-goal lead, inviting pressure, and they were made to pay with a stunning 75th-minute 30-yard equaliser from Whalley.
Allowed to run at goal Whalley's rocket struck the underside of the bar, bounced down and into the roof of the net.
The wheels had come off and worse was to follow when Gillies was harshly sent off for a challenge in midfield on
Alan Moogan that warranted a yellow card rather than a straight red.
Alnwick then made two superb saves from Whalley with tip overs and another from Ledsham - but the youngsters heroics were all in vain.
On loan Macclesfield Town striker Vinny Mukendi raced on to Ledsham's through ball to find the bottom corner in the 89th minute.
It was a third defeat in four games for the Heed who will now bid to get back on track at 18th placed AFC Telford United on Saturday.
Gateshead: Alnwick, Baxter, Carruthers, Gate, Curtis, Henderson (Fisher 90), Gillies, Turnbull, Shaw, Odubade, Cummins (Brittain 76)
Subs (not used): Farman (gk) Odhiambo, Nix.
Goals: Shaw (22), Odubade (26)
Southport: McMillan, Lee, Akrigg, Grand, Whalley, Moogan (Lever 83), Gray (Carden 90), Owens, Ledsham, Mukendi, Poku.
Subs (not used): Brown, Nemes (gk), Walker
Goals: Whalley (67,75), Mukendi (89)
Booked: Grand, Poku
Referee: Ross Joyce (Middlesbrough)
Jon Shaw scores the opening goal
Yemi Odubade scores the second
Photos by Simon Barclay (www.sbsportsphotos.com).