Championship   M. W D L goals
  at home 3 2 0 1 8 : 3
  Away 3 0 1 2 2 : 9
  6 2 1 3 10 : 12
FA Cup   M. W D L goals
  at home 1 1 0 0 3 : 0
  Away 1 0 0 1 0 : 1
  2 1 0 1 3 : 1
League Cup   M. W D L goals
  at home 1 0 0 1 0 : 2
  Away 1 0 1 0 1 : 1
  2 0 1 1 1 : 3
League One   M. W D L goals
  at home 1 0 1 0 1 : 1
  Away 1 0 0 1 1 : 2
  2 0 1 1 2 : 3
overall   M. W D L goals
  at home 6 3 1 2 12 : 6
  Away 6 0 2 4 4 : 13
  Neutral Place 0 0 0 0 0 : 0
  12 3 3 6 16 : 19
Championship
1928/1929 10. Round Reading FC - Clapton Orient 4:2
1928/1929 5. Round Clapton Orient - Reading FC 1:1
1927/1928 6. Round Reading FC - Clapton Orient 4:0
1927/1928 2. Round Clapton Orient - Reading FC 3:0
1926/1927 10. Round Reading FC - Clapton Orient 0:1
1926/1927 5. Round Clapton Orient - Reading FC 5:1
FA Cup
1992/1993 2. Round Reading FC - Leyton Orient 3:0
1957/1958 3. Round Leyton Orient - Reading FC 1:0
League Cup
2000/2001 1. Round Reading FC - Leyton Orient 0:2 (0:0)
2000/2001 1. Round Leyton Orient - Reading FC 1:1 (0:1)
League One
2023/2024 30. Round Reading FC - Leyton Orient 1:1 (1:1)
2023/2024 12. Round Leyton Orient - Reading FC 2:1 (1:1)

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