Michael Appleton was frustrated following Blackpool's 1-1 draw with Birmingham City, after The Seasiders had initially led the game.
A comfortable first-half performance saw the players enter the dressing room at the interval in a winning position, yet an equaliser from Curtis Davies three minutes after the restart pegged the home side back.
"That's why I'm frustrated after only taking a point out of a game again," he said. "Once we conceded the goal they had a five or six minute spell after that, which will always happen when you've scored a goal anyway. We rode that spell a little bit and we threw everything we could at them.
"A lapse of concentration from a set play has cost us the game. It was a bit of a scrappy game and the pitch made it difficult for both teams. If we defend a set-play properly then we win the game 1-0 and move on to Peterborough."
After consecutive home games, The Seasiders will now spend the next two weeks on the road looking to turn their recent draws into victories.
"It's a difficult league with 46 games, it's relentless and anyone can beat anyone. There's no hiding place, the players have done ever so well in terms of what they've given me, in terms of their commitment. I'd just like to think that something will fall for us a bit more in the final third."
Having now lost Ian Evatt to injury, Appleton does hope to welcome back Gary Taylor-Fletcher shortly following a hamstring tear.
"Fletch has started running so hopefully he's started getting himself closer to getting back," he added.