The end result means Leigh stay in eighth place within the Tremendous League desk however claw down the hole to seventh-placed Leeds to 3 factors, whereas fourth-placed St Helens lose additional floor on the high of the standings.
Saints had been diminished to 12 when Percival was judged to have gone in excessive on Moylan with 1 / 4 of an hour gone, and Leigh didn’t take lengthy to take benefit.
Hanley dived in on the nook to ship them forward and Amone added to their tally quickly after, having labored onto Robbie Mulhern’s offload.
McIntosh matched his positive work with the boot with a strive of his personal, having latched onto Moylan’s cross-field kick, and O’Donnell capped off a depressing first half for Saints when he ran in with seconds of the half remaining.
St Helens’ response within the second half got here after Waqa Blake stripped the ball again for the guests, kicking into house for Davies to the touch down.
An ill-disciplined evening for Saints continued as Lomax was proven a yellow card for a sort out on O’Brien earlier than the hour mark, resulting in Charnley stepping into as Saints scrambled to defend.
One other Leigh strive adopted shortly after, this time as Lam ran in from 20 metres, with Moylan working in on the left and Charnley diving on the nook to wrap up a thumping victory.
Saints’ depressing evening on the Leigh Sport Village means their most up-to-date victory got here in opposition to struggling London Broncos on 16 June and their efficiency will give boss Paul Wellens pause for thought as they intention for a play-off place.