Oxford recorded a comfortable away win at Barnet.
The hosts thought they had taken the lead but Mark Hughes' effort was ruled out for handball before Simon Heslop thumped the U's ahead from 25 yards.
The visitors made it 0-2 before the break when defender Liam Davis fired home from Peter Leven's lobbed pass.
Hughes forced a good save from keeper Ryan Clarke and Izale McLeod headed over before U's skipper Jake Wright saw red for a second booking late on.
VIEWS FROM THE DRESSING ROOM
Oxford United manager Chris Wilder told BBC Oxford:
"I knew Barnet would ask some questions because they have some good players.
"We started well but for a period we were the architects of our own downfall by giving away too many free kicks, and maybe overplayed, but we stood up to that and scored two fantastic goals.
"There were good signs for the team. Eight or nine games in we are evolving as a team and we are heading in the right direction."
Barnet 01 Brill 02 Senda (Owusu - 69' ) 03 Parkes 21 Kamdjo 22 Leach 04 Hughes 08 Byrne Booked 20 Marshall (Deering - 46' ) 11 Holmes 23 McLeod 24 Taylor (Kabba - 46' ) Substitutes 18 O'Brien 05 Dennehy 10 Deering 09 Kabba 12 Owusu Oxford Utd 01 Clarke 02 Batt 05 Duberry 06 Wright Dismissed after an earlier booking 04 McLaren (Whing - 73' ) 08 Heslop (Haworth - 61' Booked ) 20 Leven 26 Davis Booked 09 Constable (Smalley - 79' ) 15 Potter 30 Hall Substitutes 16 Whing 22 Worley 18 Payne 31 Haworth 10 Smalley
Ref: Carl Berry