THE visitors always thought they would be up against it - with Southport having bagged 171 points in their last three games - and they weren't wrong.
Nervous Moore let Southport dominate the loose and set play and after only 10 minutes the home side had crossed.
Another quick ball from the pack saw Southport go over again after 20 minutes.
Moore could feel the game slipping away but decided to have a go themselves.
On the half hour, Simon Richards touched down for Bradbury to convert.
But Richards was injured in the act of scoring and, soon after, a penalty stretched the home lead to 15-7 at half-time.
Moore were treated to a faultless second half of rugby by the Seasiders - forwards and backs combining well, resulting in several training-ground tries.
Moore tired but responded late on. Reardon kicked and chased a penalty for an excellent individual try.
Southport must be confident of promotion from South Lancs-Cheshire Three but Moore travel to Marple on Saturday week needing a win to stave off a relegation threat.
They will be without No8 Pearse, who broke two bones in his left hand.
Moore 2nd XV 13 Caldy 3rd XV 33: Moore started well but wasted a three-man overlap after three minutes.
A penalty by Wilson put the home side in front but the visitors, playing down the slope, began to pressurise.
Two converted tries saw them take a 14-3 interval lead.
Moore's backs looked the better but had been starved of good ball.
This changed when, early in the second half, Reynolds came into the line from fullback to score wide out.
After an opportunist try from a kick ahead by the visitors, P Woollacott went over to make it 13-19.
With Moore's forwards tiring, silly mistakes put them on the back foot and, although they threatened on a number of occasions, Caldy racked up more points in the closing stages to finish worthy winners.