Manager Paul Tisdale believes Exeter City "wasted a good opportunity" after losing 2-1 to Swindon Town at St James Park in the Johnstone's Paint Trophy.
Daniel Nardiello got a second-half consolation goal after Jake Jervis's brace put the League Two side 2-0 up.
"It feels like a little bit of a giveaway today and that we've really wasted a good opportunity," Tisdale told BBC Radio Devon.
"A lot of our play I quite liked, but it just didn't work for us today."
He added: "There was a lot of drive in us today, especially second half, but things just transpired against us."