Oxford United manager Gary Waddock praised his side for a 'big 2-0 win' at Play-Off chasing rivals Plymouth Argyle.
Dave Kitson volleyed Oxford ahead in the 33rd minute after being teed up by Ryan Williams' first-time delivery from Josh Ruffels' free-kick from the left.
Target man James Constable doubled Oxford's tally with a brilliant rising 20-yard drive on the run in the 63rd minute after Callum O'Dowda split the Plymouth defence with a brilliant run and pass.
Argyle's cause was not helped by the 49th-minute dismissal of defender Maxine Blanchard for a second caution.
Waddock said: "This should give the team a lot of confidence going forward now. It was a big game and a big win for us.
"I am pleased with the performance and obviously it's backed up with the result. I am delighted with that.
"We got two very good goals and kept a clean sheet. The keeper made two very important saves and so all-in-all it was a very good day for us.
"I am really pleased for the players and the fans, who travelled a long way down here and they gave us some really good support.
"We looked a real threat going forward today. Everyone to a man performed well today and that is always pleasing.
"I watched Plymouth on Tuesday at Newport and I brought in young Callum O'Dowda on the left and we had Ryan Williams on the right. They have both got a lot of pace and are good travelling with the ball. I identified areas I wanted to exploit and I wanted us to start on the front foot and that's the way we played today.
"We have had an horrendous run, some really poor results and dropped out of the play-off places for the first time last week. If we perform like we did today we will give ourselves a chance. If we don't we will be back out of the top seven again. The players have set the standard today. They have to maintain that now."
Frustrated Plymouth boss John Sheridan fumed: "It was a very poor performance and we've done that a couple of times now when there is a big game and we are all waiting for a good performance and again we are really flat.
"I've got no qualms about the result. They were better than us and every player in their team performed better than every player in my team.
"In the first half that was the poorest we have played for a long time, possibly this season.
"I can't put my finger on it and I wish I could. I just can't explain it and it wouldn't be so annoying if it was the first time this has happened but it isn't - we've done it before.
"I've just seen the results and there was a great opportunity for us again to build on Tuesday night's win at Newport.
"I think sometimes they just go out and don't really realise what we are playing for and what is at stake. I stick with the same team, put Lewis (Alessandra) up front and I told them all 'you have to be brave at home' and we weren't.
"Oxford deservedly won the game because playing like that we deserved nothing."