Darren Ferguson felt there were positives to take from Rovers' performance against Rotherham United.
Injury-time goals from Michael Smith and Joe Newell meant that John Marquis' first-half opener counted for nothing, but Ferguson praised his side's performance for the most part.
He said: "It's a hard one to take after losing to literally the last kick of the game, my players didn't deserve that given the effort and commitment they showed.
"It was a typical derby game, they didn't give us many problems at all and we managed to score a goal which John finished very well.
"Because of the way Rotherham play you are always going to have to do a lot of defending, in the main we managed that well and limited them to just a few half chances."
Ferguson believes lengthy injuries to Tom Anderson and Alfie Beestin didn't help Rovers cause, with 12 minutes of time added on at the end of the match.
He added: "Tom's injury didn't do us any favours, it gave us a problem because I knew that with him being down for so long, the crowd would get a lift when the board went up.
"I don't think we can have any complaints about the penalty, it's the last 10 seconds of the game and we just needed to clear the ball out of play.
"It's important that we don't let this affect us too much now, it's a sore one for everyone at the football club but we need to go again and show a positive response."
Tickets for our home game against Bury on Saturday 3 March are available to purchase now at tickets.clubdoncaster.co.uk.