The midfielder also claimed an assist for the equaliser as Bishop's Stortford overcame their league rivals - and they face Harlow in the next round
Ollie Peters, Jonny Giles and Tosin Olufemi got the goals as Bishop's Stortford went ahead of Potters Bar Town at the summit on goal difference
Bishop’s Stortford denied fourth consecutive win as lowly Wingate and Finchley held them to goalless draw at R&D Advisors UK Stadium.
Goals in each half from Matt Johnson and Frankie Merrifield, his eighth in 10 games this season, gave Stortford victory in West Sussex.
Bishop's Stortford made it back-to-back wins and clean sheets as they moved up to fifth in the Isthmian Premier on Tuesday night (September 20)
Bishop's Stortford conceded a 79th-minute equaliser as they were held to a 1-1 home draw by Cray Wanderers on Friday night (August 26)
Frankie Merrifield cancelled out Ronan Silva's opener before the Rooks, who had Will Salmon sent off, won it through Razz Coleman De-Graft
Ollie Peters netted a brace as Bishop's Stortford ended pre-season with a 4-2 home friendly win over a Colchester United XI on Tuesday night
For the second time in six days, the Blues came from behind in Essex to win 3-1 with goals from Ryan Charles, Terrell Egbri and Frankie Merrifield
Terrell Egbri, Frankie Merrifield and Ryan Charles scored as Bishop's Stortford beat Takeley 3-1 in their opening pre-season friendly on Saturday
Bishop's Stortford suffered their first defeat since January 8 and conceded for the first time in 1,088 minutes away to the Ambers on Easter Monday
Bishop's Stortford kept a 12th consecutive clean sheet and are unbeaten in 17 matches following 3-0 home win over Potters Bar Town.
Blues' 3-0 win over Folkestone is fifth victory on the bounce, extends unbeaten run to 15 matches and brings 10th successive clean sheet.
Two goals in less than a minute earned Bishop's Stortford a 2-0 win at Wingate & Finchley in the Isthmian League, Premier Division on Saturday
Bishop's Stortford were held to a second consecutive 0-0 draw at home to Horsham on Saturday as they fell two more points adrift of leaders Worthing
Ryan Charles scores the first and earns penalty for the second in 2-0 win that leaves Blues unbeaten in seven and only one defeat in 22 in league.
Stortford, who had majority of possession and chances at Leatherhead, still climb to third in Isthmian League Premier Division.
Fourth-placed Bishop's Stortford make it nine goals in two games and have now lost only once in their last 17 league games.
Jimmy Wallace opened his Bishop's Stortford account as they thrashed Brightlingsea Regent 5-0 in the Isthmian League, Premier Division on Saturday
Bishop's Stortford suffered their first defeat in 90 minutes for 19 games as they went down 2-0 at Hornchurch on Saturday