Premier League   M. W D L goals
  at home 1 0 1 0 2 : 2
  Away 1 0 0 1 2 : 4
  2 0 1 1 4 : 6
Championship   M. W D L goals
  at home 18 14 3 1 32 : 15
  Away 18 2 4 12 19 : 33
  36 16 7 13 51 : 48
League Cup   M. W D L goals
  at home 1 0 1 0 0 : 0
  Away 2 1 0 1 2 : 3
  3 1 1 1 2 : 3
League One   M. W D L goals
  at home 7 4 3 0 15 : 7
  Away 6 1 2 3 7 : 11
  13 5 5 3 22 : 18
League Two   M. W D L goals
  at home 3 0 1 2 1 : 5
  Away 3 1 2 0 2 : 1
  6 1 3 2 3 : 6
EFL Trophy   M. W D L goals
  Away 2 1 0 0 2 : 1
  2 1 0 0 2 : 1
Playoffs   M. W D L goals
  at home 1 0 1 0 1 : 1
  Away 1 0 1 0 1 : 1
  2 0 2 0 2 : 2
overall   M. W D L goals
  at home 31 18 10 3 51 : 30
  Away 33 6 9 17 35 : 54
  Neutral Place 0 0 0 0 0 : 0
  64 24 19 20 86 : 84
Premier League
1987/1988 26. Round Portsmouth FC - Oxford United 2:2 (0:1)
1987/1988 1. Round Oxford United - Portsmouth FC 4:2 (1:0)
Championship
1998/1999 26. Round Portsmouth FC - Oxford United 2:2 (0:1)
1998/1999 6. Round Oxford United - Portsmouth FC 3:0 (2:0)
1997/1998 6. Round Oxford United - Portsmouth FC 1:0 (0:0)
1997/1998 1. Round Portsmouth FC - Oxford United 2:1 (1:1)
1996/1997 30. Round Portsmouth FC - Oxford United 2:1 (1:1)
1996/1997 9. Round Oxford United - Portsmouth FC 2:0 (2:0)
1993/1994 5. Round Portsmouth FC - Oxford United 1:1
1993/1994 1. Round Oxford United - Portsmouth FC 3:2
1992/1993 8. Round Portsmouth FC - Oxford United 3:0
1992/1993 4. Round Oxford United - Portsmouth FC 5:5
1991/1992 8. Round Oxford United - Portsmouth FC 2:1
1991/1992 4. Round Portsmouth FC - Oxford United 2:1
1990/1991 8. Round Oxford United - Portsmouth FC 1:0
1990/1991 5. Round Portsmouth FC - Oxford United 1:1
1989/1990 8. Round Portsmouth FC - Oxford United 2:1
1989/1990 3. Round Oxford United - Portsmouth FC 2:1
1988/1989 7. Round Oxford United - Portsmouth FC 1:0
1988/1989 3. Round Portsmouth FC - Oxford United 2:1
1984/1985 5. Round Portsmouth FC - Oxford United 2:1
1984/1985 2. Round Oxford United - Portsmouth FC 1:1
1975/1976 8. Round Oxford United - Portsmouth FC 1:0
1975/1976 4. Round Portsmouth FC - Oxford United 0:2
1974/1975 7. Round Portsmouth FC - Oxford United 2:1
1974/1975 4. Round Oxford United - Portsmouth FC 1:0
1973/1974 7. Round Oxford United - Portsmouth FC 3:0
1973/1974 3. Round Portsmouth FC - Oxford United 2:1
1972/1973 4. Round Oxford United - Portsmouth FC 1:3
1972/1973 2. Round Portsmouth FC - Oxford United 1:0
1971/1972 8. Round Oxford United - Portsmouth FC 2:2
1971/1972 4. Round Portsmouth FC - Oxford United 2:0
1970/1971 8. Round Oxford United - Portsmouth FC 1:1
1970/1971 5. Round Portsmouth FC - Oxford United 1:0
1969/1970 6. Round Portsmouth FC - Oxford United 2:1
1969/1970 1. Round Oxford United - Portsmouth FC 0:2
1968/1969 8. Round Oxford United - Portsmouth FC 3:1
1968/1969 3. Round Portsmouth FC - Oxford United 3:0
League Cup
1991/1992 2. Round Oxford United - Portsmouth FC 0:1
1991/1992 2. Round Portsmouth FC - Oxford United 0:0
1985/1986 Quarter-finals Oxford United - Portsmouth FC 3:1
League One
2023/2024 36. Round Portsmouth FC - Oxford United 2:1 (1:1)
2023/2024 18. Round Oxford United - Portsmouth FC 2:2 (1:0)
2022/2023 43. Round Oxford United - Portsmouth FC 1:1 (1:1)
2022/2023 13. Round Portsmouth FC - Oxford United 1:1 (0:1)
2021/2022 24. Round Portsmouth FC - Oxford United 3:2 (2:1)
2021/2022 31. Round Oxford United - Portsmouth FC 3:2 (1:1)
2020/2021 31. Round Oxford United - Portsmouth FC 0:1 (0:0)
2020/2021 14. Round Portsmouth FC - Oxford United 1:1 (1:0)
2019/2020 17. Round Portsmouth FC - Oxford United 1:1 (0:0)
2018/2019 29. Round Oxford United - Portsmouth FC 2:1 (2:0)
2018/2019 3. Round Portsmouth FC - Oxford United 4:1 (0:0)
2017/2018 39. Round Portsmouth FC - Oxford United 3:0 (1:0)
2017/2018 2. Round Oxford United - Portsmouth FC 3:0 (0:0)
League Two
2015/2016 28. Round Portsmouth FC - Oxford United 0:1 (0:0)
2015/2016 8. Round Oxford United - Portsmouth FC 1:1 (1:0)
2014/2015 33. Round Portsmouth FC - Oxford United 0:0 (0:0)
2014/2015 4. Round Oxford United - Portsmouth FC 0:1 (0:0)
2013/2014 26. Round Oxford United - Portsmouth FC 0:0 (0:0)
2013/2014 1. Round Portsmouth FC - Oxford United 1:4 (1:2)
EFL Trophy
2019/2020 Group B Oxford United - Portsmouth FC 4:5 (1:1, 2:2) pso
2013/2014 2. Round Oxford United - Portsmouth FC 1:2 (0:0)
Playoffs
2019/2020 League One Semi-finals Oxford United - Portsmouth FC 5:4 (1:1, 1:1, 1:1) pso
2019/2020 League One Semi-finals Portsmouth FC - Oxford United 1:1 (1:1)

For games that were decided on penalties the score after 120 minutes will be included in the ranking