Chesterfield assistant manager Danny Webb is delighted his side’s fans will get the chance to sample a big match atmosphere in the third round of the FA Cup against Championship outfit Watford.

The Spireites booked a trip to Vicarage Road with a 1-0 win over Leyton Orient at the SMH Group Stadium to add the O’s to the first-round scalp of fellow League One side Portsmouth.

The National League leaders always looked on top even if there was some good fortune about their winning goal which went in via the head of Orient captain Idris El Mizouni.

Webb said: “Watford away, they are obviously not Man United or Tottenham but they are a very, very big club.

“I hope we take thousands down there and genuinely enjoy the day.”

Webb was proud of the way the Chesterfield players acquitted themselves against higher-ranked opponents in Orient.

He said: “I would say to everyone that the result doesn’t lie. We were the better team from start to finish.

“It would be good if the season ended now but life isn’t that easy. It shows how much we attack the FA Cup. It shows how much it brings the ground together and how much they get behind us.”

Will Grigg had the first effort on target when his close-range back heel at a corner was held by Orient keeper Sol Brynn.

Orient full back Tom James tested Ryan Boot with a shot from outside the area before Chesterfield grabbed the lead with 38 minutes gone as a cross from Banks deflected off the top of El Mizouni’s head and over Brynn.

The Orient midfielder almost made amends after 53 minutes when his shot forced Jamie Grimes into a hacked clearance which spun back wide of his own goal.

Armando Dobra’s deflected shot fell to Brynn and James Berry shot wide as Chesterfield added Orient to the first-round scalp of League One pacesetters Portsmouth.

Orient boss Richie Wellens did not hold back in his assessment of his side’s performance.

He said: “It was a disgrace. The first six or seven minutes we were in control of the game but they ran a little bit harder, fought a little bit harder.

“Just at the moment little things are going against us. I spoke to the players at half-time and I said try and put this into perspective that it’s a freezing cold weekend and our supporters have saved up, worked overtime in the current crisis when it is coming up to Christmas and the energy bills are what they are and that first-half performance is not acceptable, nowhere near.”

Danny Webb believes Chesterfield deserve their place in the FA Cup second round after Tom Naylor’s first-half header knocked out League One leaders Portsmouth at the SMH Group Stadium.

Former Pompey midfielder Naylor headed the National League pacesetters into a round-two tie with mid-table League One side Leyton Orient, and Spireites assistant manager Webb thinks they were value for the 1-0 win in front of a sell-out crowd.

Chesterfield claimed a deserved lead just after the half-hour as Liam Mandeville curled in a free-kick and Naylor beat goalkeeper Will Norris to the ball to head home.

Chesterfield had chances in the second half to add to their lead but were rarely troubled by a Portsmouth side who lost Regan Poole and Tino Anjorin to injuries before the break.

Webb said: “We needed them to be a little bit off their game and we had to be on it and both things married up today.

“I’m going to be biased but I think the best team won today. Portsmouth made it a real tough cup tie with their supporters and how they played at times.

“Supporters want to see flair, they want to see wins. They want to see goals but they want to see passion.”

Portsmouth head coach John Mousinho admitted his side were second best.

He said: “We got punished by a very decent side. There were plenty of things I thought we did well up until half-time but I thought second half Chesterfield were all over us to be honest.

“We don’t want to overreact but sometimes the best thing to do is take a breath and we will review the game on the bus on the way home.

“Our quality was very poor in the second half. We got in some very good spots but the ball kept going behind for a goal kick.”