Morecambe made it three wins on the bounce as they came from behind to beat the Shrimpers at Roots Hall on Saturday.
Jim Bentley’s side maintained their hold over the Essex side with a fourth successive win over Southend to move them up to seventh in the League 2 table.
They did it the hard way as they were forced to come from behind – and it took some harsh words from boss Bentley at half time to lift his side after a shaky start.
Southend certainly looked the better side in the opening stages and they almost took the lead in only the third minute of the game.
Right back John White swung in a cross from the right which was met by the in-form Freddy Eastwood but his header hit the post with Barry Roche beaten.
Southend’s pressure paid off on the half hour when former Shrimp Kevan Hurst was given too much time and space in the box.
The right winger cut inside and waltzed past two weak challenges before producing a low, left-foot shot that took a deflection through a crowd of players before beating Roche low to his left hand side.
To their credit the Shrimps hit back almost immediately when Andy Fleming chose the perfect time to open his account for the season as he produced a well-directed curler from the edge of the area to beat Daniel Bentley.
The goal gave the Shrimps a huge lift and after some harsh half time words they shocked the home side as they took the lead 14 seconds into the second half.
Stewart Drummond played the ball forward for Padraig Amond who nipped in behind the home defence. His first effort was well saved by Bentley but the ball fell into the path of Fleming who kept his cool to score his second of the game.
Morecambe maintained the pressure with Amond forcing a superb save from Bentley who tipped over a close-range header.
But Bentley was left powerless on 55 minutes when Jack Sampson scored his first ever Football League with a superb 30-yard effort that flew into the top right hand corner of the Southend goal.
It was a day he will never forget but it was one Morecambe substitute Robbie Threllfall will remember for the wrong reason as he was sent off just minutes after coming on when a late tackle was deemed reckless by the referee.
With 10 men the Shrimps were forced to defend almost non-stop for the final 20 minutes with keeper Roche forced into superb saves from Barry Corr and Cauley Woodrow.
The Shrimps’ defence, with Mark Hughes and Andy Parrish outstanding, remained solid and they helped their side to three well-earned points.
Southend: Bentley, White, Prosser, Phillips, Coker, Straker, Timlin (Atkinson 61), Leonard, Hurst, Eastwood, Woodrow (Corr 61). Subs not used: Smith, Reid, Clifford, Auger.
Morecambe: Roche, Wright, Parrish, Hughes, Diagne (Threlfall 63), Drummond, Fleming, Kenyon, Amond (Mwasile 83), Sampson (Williams 90), Ellison. Subs not used: Arestidou, Marshall, McGee, Doyle.
Referee: C Breakspear.
Attendance: 6080 (64 from Morecambe)