Bradford City boss Peter Taylor was left frustrated by his team's inability to retain possession as they lost 2-1 to Oxford on their first ever visit to the Kassam Stadium.
It was the Bantams' second successive defeat after their shock home setback against Barnet.
David Syers turned in his seventh goal of the season to put City ahead on nine minutes.
But they then had to fight a rearguard action as Oxford pinned them back, totally dominating the second half.
And the constant pressure eventually told as Steve Maclean and Tom Craddock converted from close range in the last 13 minutes to give Oxford revenge for their 5-0 drubbing at Valley Parade in October.
Taylor said: "We dropped too deep and invited pressure on ourselves.
"There were some tired legs out there towards the end but we had tired legs for a reason because we kept giving the ball away.
"We're not using our body and holding the ball up and it's costing us."
City, who slipped to 14th in the table, six points adrift of the play-off places, lacked real quality up front on the day.
And Taylor knows they must start taking good opportunities when they do arrive in front of goal.
"I felt at half-time we needed that second goal," he said.
"We had a brilliant opportunity to score a second.
"Omar Daley had an easy one really when he was played in, but unfortunately he couldn't take it."