Cook desperate for reaction
Paul Cook is demanding an response from his players when Chesterfield make the short trip to local rivals Mansfield at the weekend.
The Spireites head to the One Call Stadium on the back of a 2-1 defeat at Plymouth which saw Cook's men lose top spot in League Two.
Chesterfield arrived in Devon on Tuesday night as league leaders but finished the night in second spot and a point behind new table-toppers Rochdale, who won 3-0 at Northampton.
As so often this season top scorer Reuben Reid was the hero for Plymouth, who are managed by former Spireites boss John Sheridan.
Reid fired the hosts ahead in the 28th minute, sending an angled drive from the right past diving goalkeeper Tommy Lee and in off the far post.
Chesterfield responded with Ritchie Humphreys' 57th-minute strike from the left side of the area that deflected off Argyle midfielder Andres Gurrieri to send it past home keeper Jake Cole.
Reid restored Argyle's lead with a brilliant solo goal two minutes later, skipping between four defenders on the edge of the penalty area before rifling a 20-yard rising shot into the net.
Cook said: "All we talk about at this stage of the season is results. It doesn't matter whether you play well, we have been beaten 2-1 and have got a long trip back to Derbyshire.
"But we have got to pick ourselves quickly up because we have got a massive game both for ourselves and our supporters at Mansfield on Saturday.
"We have said all the way along there are bumps and bruises but it's a promotion campaign we are on. It doesn't mean that you finish in a promotion place or a play-off place it means you need to finish the season as strongly as possible.
"We are very disappointed because we felt in the second half that we were never going to lose the game and we were in the ascendancy.
"It was a question of if we could score, when we could score and when we'd get the next one. You know we never felt under any pressure but you have got to take your hat off to Plymouth because they won."