The third visitors to Roots Hall of the league season were Rochdale and it ended in a 3-0 defeat for Blues.
Rochdale took the lead with two quick fire goals coming before half-time, the first being scored by Ian Henderson and the second scored by Aaron Morley.
They then extended their lead to a three-goal margin with a goal from Callum Camps in the 78th minute.
The wait for Southend's first points of the 19/20 league season goes on.
Above is the match gallery.