Chesterfield manager John Sheridan hailed his high-flying side after the League Two leaders ground out a 1-0 win at struggling Bradford.
After six games without a win, Sheridan's men have now registered successive victories over Lincoln and Bradford to issue a timely warning to the chasing pack.
Deane Smalley, on loan from Oldham, marked his return from suspension by giving the leaders a 16th-minute advantage which they held despite late pressure from Peter Taylor's men.
Sheridan said: "I was very pleased with our performance. Bradford put us under pressure in the last 10 minutes but we had some great chances in the first half to get the game sewn up.
"When James Hanson came on he caused us a few problems. Their players responded for Peter Taylor. They fought for everything, so it was a great result for us."
Sheridan is confident his men are well placed to go on and win promotion to League One as the run-in approaches.
He added: "People said before the win against Lincoln that we were having a ropey spell but we've only lost one game in 14 and we have a good strong squad.
"Everyone who has come in has responded well so I am delighted with them and the position we are in at the top.
"Bradford is never an easy place to come but Deane Smalley took his goal really well and I was pleased with the way we defended the lead."
Bradford manager Taylor believes his players do not relish playing at Valley Parade but felt they gave Chesterfield a run for their money.
Taylor said: "We looked a bit too nervous in the first half because of the situation we are in. I am not sure that our players look forward to home matches at the moment but that is something they have to overcome because they are playing in front of a good crowd.
"In the second half, after James Hanson came on, we looked as if we could handle everything better and get a goal but it never came.
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