Portsmouth boss Guy Whittingham was left to rue a 'calamitous' and 'suicidal' early goal in their 3-0 JPT defeat at Newport.
Pompey centre-back Bondz N'Gala and goalkeeper Trevor Carson combined to gift the Exiles their opener. N'Gala's header sailed over Carson and Conor Washington netted from a tight angle.
Newport doubled their advantage in the 18th minute when on-loan defender Deji Oshilaja finished from close range after Robbie Willmott's free-kick was parried by Carson.
County captain David Pipe saw red for a reckless challenge but Pompey could not take advantage and even conceded a third late on as Washington pounced to score his second.
"We gave a calamitous goal away after five minutes which was absolute suicide and that gave Newport a huge lift. It was a simple miscommunication," Whittingham said.
"We knew it was going to be a tough game as Newport were going to be up for it as every team are because we are Portsmouth and that's what we are.
"You have to make sure you don't give anything away in the first 20 minutes. But we did it twice.
"When there is a direct free-kick you have to follow the ball in and get to it first. We didn't.
"It's not shape that beat us, it's the desire to win. We gave them that desire by giving away the first goal. There aren't many positives for us whatsoever."