King's Lynn Town manager Gary Setchell admitted he was disappointed with his side's second-half performance, but praised the Linnets' grit and determination as they edged past Ridgeons Premier side Haverhill Rovers.

'We came in at half-time and we could have been four up, but second half we looked like a totally different side,' said Setchell.

'We looked tired and drained apart from the back four. At 1-0 we kept opening the door for Haverhill to get back into the game.

'Luckily the back four was strong – I thought (Paul) Cousins and (Stuart) Wall were very good. We've shown that we have got grit and ugliness to win games 1-0 and that is FA Cup football.'

Danny White's early strike was enough to see the home side progress into the second qualifying round, while there was an impressive debut for youngster Ryan Fryatt.

The Linnets started well, with Harris beating the Haverhill offside trap, but failing to find the net when one-on-one with Alex Archer.

But they took the lead on eight minutes when White fired home after good work from the lively Harris.

Lynn were a constant threat to the visitors and nearly stretched their lead when Fryatt was inches away from Stephen Spriggs' superb free-kick.

Spriggs hit the cross bar with a cross-cum-shot and Defty headed inches over as the home side dominated the remainder of the first-half but failed to double their advantage.

The hosts carried on where they left off at the start of the second half and were soon threatening the Haverhill goal again, former Dereham striker Beaumont just failing to lift the ball over Archer.

With 11 minutes left the Linnets missed a golden chance to seal the game, substitute Craig Calver and Spriggs forcing Archer into a stunning double save.

Haverhill rallied late on with a succession of corners, but Lynn's backline held strong to seal their passage into the next round.

• King's Lynn: Street, Fryatt, Wall, Cousins, Yong, Spriggs, Bexfield (Buhlemann), White, Beaumont (Calver) ,Defty, Harris (J Thurlbourne). Subs not used: Hails. Goal: White 8.

• Haverhill Rovers: Archer, Abbot, Strong, Wardley, Kingham (Boreham), Harvey (Harper), Higgs, Hunt, Cornwell, Lodge, Wilkinson (Heller). Subs not used: Bradley, Geoghan, Greygoose. Att: 836.