Dagenham boss John Still labelled his team's 3-2 victory over Oxford at the Kassam as an "excellent away performance".
Sam Williams and Luke Wilkinson capitalised on some poor Oxford defending at set-pieces and Luke Howell also found the net for the Daggers who had to hold on after Tom Craddock grabbed his second and midfielder Kevin Maher was sent off for two yellow cards with 20 minutes to go.
Still said: "I thought we were the better team and played really very well. We worked very hard for our goals, and gifted them two goals.
"We've got a young group, the only experienced player was Kevin Maher. I should have taken him off before the red card, and I was going to, to be honest.
"But even when we had ten men they only had the one save our goalkeeper made from Adam Chapman. That was their only effort. I thought it was an excellent away performance."
Oxford manager Chris Wilder said: "The goals we conceded were awful. If you can't defend two out of three corners... We conceded poor goals and we were always chasing the game.
"We just didn't get going. It was a flat performance. When they went down to ten men, the quality wasn't there from us.
"We showed a bit of spirit by fighting back a bit in the second half, but we've not shown a lot of quality on the ball. This was a big week for us with two home games, and it's started badly.
"There were five draws in the division tonight, and it annoys me that we couldn't get something from the game, a draw at least, which would have kept us in there."