Chesterfield boss Dean Saunders said his side missed “too many chances” against Carlisle United in the Capital One Cup.
Mani Dieseruvwe’s goal six minutes from the 90 cancelled out Jabo Ibehre’s opener and forced the first round tie into extra-time at Brunton Park.
But substitute Dieseruvwe’s evening took a turn for the worse when he was shown a red card moments in to the additional 30 minutes on Tuesday night.
And, with the Spireites down to ten men, their League Two opponents snatched a 3-1 victory, after a second from Ibehre and a sucker-punch from Kevin Osei.
Saunders said: “It must have been a good game to watch. It was end-to-end and with lots of chances but we’ve missed too many and Tommy (Lee) has had too much to do for my liking.
“Mani’s red card came just as we looked like we were going to win. That’s not helped us but I have learned a lot from what I have seen. Mani’s not elbowed the lad in the face but he has led with his arm.
“It was a great goal from Mani and we had three chances in the last few minutes and there was a blatant penalty. But Carlisle played really well and they had lots of chances too.”
Saunders rested Sylvan Ebanks-Blake and Drew Talbot for the trip to Cumbria but both are expected to be in contention for the League One clash at Sheffield United on Saturday.
Chesterfield will be looking to build on their opening day win over Barnsley at the Proact Stadium, which gave Saunders a winning start to his time in charge of the Spireites.
Meanwhile, Sam Hird and Charlie Raglan have both penned contract extensions until the summer of 2017, Jay O’Shea and Dan Jones have been offered deals and Dan Gardner has verbally agreed terms.