LATE GOALS from subs Ricky Sappleton and James Robinson saw Billericay Town complete a league and cup double over Leiston.
Having lost 4-1 in the league match four days earlier, the Suffolk side made a bright start and goalkeeper Billy Lumley was called into action on several occasions in the opening exchanges.
The visitors also had a goal disallowed, but slowly Craig Edwards' side took a strangelhold on the game. Joe Benjamin and Junior Luke both went close twice, before Benjamin had a fierce shot well saved and then headed Evans Kouassi's cross over the top.
There were more chances at both ends in the second half, with Leiston keeper Alex Street making fine saves from Benjamin – who also had a shot cleared off the line – and Luke.
Sappleton almost made an instant impact after his introduction on the hour, but his shot was deflected wide, before Lumley denied Rhys Henry and David Head to keep his side level.
And eventually, six minutes from time, the home side got in front when Sappleton was put through and rifled the ball into the far corner of the net beyond Street.
Soon after, Robinson put the result beyond doubt when he superbly volleyed home Jeff Imudia's cross-field pass as the Blues set up a Second Qualifying Round tie at St Albans City.
Blues: Lumley, Imudia, Beavan, Dunne, Halle, Rodgers, Luke (Campbell), Lette-Jallow, Benjamin (Robinson), Bonnett-Johnson, Kouassi (Sappleton).