STEVE McClaren felt his Derby County team missed an opportunity as they crashed to a 2-1 defeat against Ipswich Town at Portman Road.
Patrick Bamford put Derby ahead after only 34 seconds and they controlled much of the first half only for Ipswich to storm back after the break.
“It’s so disappointing,” said the Rams head coach. “We probably played too much with our hearts and not our heads at times.
“At the end of the day, you have got to play smart and we didn’t play smart.”
Jonny Williams equalised and Christophe Berra headed a last-gasp winner in added time to boost the Tractor Boys’ own play-off hopes.
“We were in control of the game and needed that second goal,” said McClaren.
“We had opportunities but needed to take more care in the final third.
“Then we got sloppy at two set pieces, which was very disappointing.
“We have to rise above not getting decisions and stay in control, not light their fire by doing silly things. That gave Ipswich a lift and they fought back.”
Defeat saw Derby slip to fourth in the Championship but they still have a nine-point cushion between themselves and Nottingham Forest, who are seventh.
Forest lost again, this time at home to Charlton Athletic, who visit Derby on Saturday.