Oxford boss Chris Wilder revelled in claiming an important three points with a 2-1 win over Rotherham.
The U's took the lead through Simon Heslop but the Millers equalised when Nicky Law nipped in ahead of U's keeper Ryan Clarke. Steve MacLean then converted from the penalty spot to seal the win after Callum Kennedy had brought him down and was dismissed for the professional foul.
Wilder said: "This was a big three points for us. We want to make this a difficult place to come."
He added: "If we can get at sides here and generate an atmosphere that is positive and driving us forward, we've got an interesting end of the season to come.
"I should have been lighting up a big fat cigar with 15 minutes to go with the chances we had to put it out of their reach."
Rotherham manager Ronnie Moore felt that one important decision defined the game for his side.
Moore said: "We thought 'Alfie' (Adam Le Fondre) had a blatant penalty that the referee could easily have given.
"He should still have scored, because the keeper knocked him over and he still got up and had a shot, but put it in the side netting.
"(Kennedy) is a young lad and it was a bit of inexperience really. He'd done well until then.
"He got caught the wrong side. It was harsh, but you're never going to get away with that. Referees are instructed, you have to go for that and he's gone."
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