Leyton Orient manager Russell Slade felt hard done by after his side let a 2-0 lead slip to lose 3-2 at Colchester.
Alex Revell put Orient two up with just 18 minutes gone, but Matt Heath pulled one back before Andrew Whing was adjudged to have fouled Ashley Vincent to allow David Mooney to level from the spot and a Brian Wilson late free-kick won it for the Us.
Slade, whose side are still without a win on the road this season, said: "We felt for their penalty that the foul took place outside of the box. And the third goal looked a bit of a soft free-kick. But we have to know that we can't give away free-kicks like that in and around the box.
"We have to learn from the experiences and we have to learn, as we have done in our home matches, how to win a football match.
"We got ourselves in a great position and we've blown it but it wasn't for the lack of trying. I felt the final scoreline was unfair.
"We had long spells in both the first half and the second half where I felt we were excellent."