| Inns | HS |
| 242-5 | 93* | Sussex v Gloucestershire | Brightside Ground, Bristol | 2016 |
| 233-6 | 66 | Sussex v Essex | The Cloud County Ground, Chelmsford | 2022 |
| 216-7 | 70 | Sussex v Somerset | The Cooper Associates County Ground, Taunton | 2022 |
| 215-5 | 74 | Sussex v Middlesex | The 1st Central County Ground, Hove | 2018 |
| 213-7 | 68 | Sussex v Surrey | The Kia Oval, Kennington | 2024 |
| 212-6 | 68* | Sussex v Kent | The PROBIZ County Ground, Hove | 2012 |
| 209-6 | 52 | Sussex v Essex | The PROBIZ County Ground, Hove | 2012 |
| 208-6 | 65 | Sussex v Gloucestershire | Seat Unique Stadium, Bristol | 2024 |
| 207-2 | 81 | Sussex v Essex | The 1st Central County Ground, Hove | 2024 |
| 205-5 | 98 | Sussex v Hampshire | County Ground, Hove | 2007 |
| 204-6 | 72* | Sussex v Hampshire | County Ground, Hove | 2008 |
| 203-5 | 81 | Sussex v Hampshire | The Ageas Bowl, Southampton | 2012 |
| 203-4 | 87* | Sussex v Kent | Spitfire Ground, St Lawrence, Canterbury | 2024 |
| 202-3 | 81 | Sussex v Middlesex | Lord's Cricket Ground, St John's Wood | 2013 |
| 202-8 | 92 | Sussex v Somerset | Edgbaston, Birmingham | 2018 |
| 202-4 | 77* | Sussex v Middlesex | Lord's Cricket Ground, St John's Wood | 2025 |
| 201-8 | 77 | Sussex v Glamorgan | Sophia Gardens, Cardiff | 2021 |
| 201-7 | 61 | Sussex v Kent | The 1st Central County Ground, Hove | 2024 |
| 200-6 | 88 | Sussex v Hampshire | The Brighton and Hove Jobs County Ground, Hove | 2015 |
| 200-6 | 45* | Sussex v Essex | The Essex County Ground, Chelmsford | 2016 |
| 200-7 | 46 | Sussex v Hampshire | The 1st Central County Ground, Hove | 2024 |
| 199-7 | 55 | Sussex v Glamorgan | Sophia Gardens, Cardiff | 2025 |
| 197-7 | 75 | Sussex v Surrey | The 1st Central County Ground, Hove | 2025 |
| 195-4 | 75* | Sussex v Glamorgan | The 1st Central County Ground, Hove | 2025 |
| 195-9 | 48 | Sussex v Kent | Spitfire Ground, St Lawrence, Canterbury | 2025 |
| 194-7 | 40 | Sussex v Kent | The 1st Central County Ground, Hove | 2020 |
| 193-5 | 57 | Sussex v Yorkshire | County Ground, Hove | 2007 |
| 190-8 | 74 | Sussex v Glamorgan | The 1st Central County Ground, Hove | 2024 |
| 189-6 | 62 | Sussex v Gloucestershire | College Ground, Cheltenham | 2025 |
| 188-6 | 73 | Sussex v Hampshire | The 1st Central County Ground, Hove | 2019 |
| 187-8 | 58 | Sussex v Glamorgan | The 1st Central County Ground, Hove | 2023 |
| 186-5 | 63* | Sussex v Glamorgan | The 1st Central County Ground, Hove | 2018 |
| 185-4 | 76* | Sussex v Essex | County Ground, Hove | 2010 |
| 185-5 | 72 | Sussex v Surrey | Whitgift School, Croydon | 2011 |
| 185 | 49 | Sussex v Gloucestershire | The Brighton and Hove Jobs County Ground, Hove | 2014 |
| 185-8 | 47 | Sussex v Essex | The 1st Central County Ground, Hove | 2020 |
| 184-9 | 58 | Sussex v Surrey | The Brit Oval, Kennington | 2009 |
| 184-8 | 78 | Sussex v Somerset | The Cooper Associates County Ground, Taunton | 2019 |
| 184-6 | 72 | Sussex v Worcestershire | The 1st Central County Ground, Hove | 2019 |
| 184-8 | 43 | Sussex v Hampshire | Utilita Bowl, Southampton | 2024 |
| 183-6 | 62 | Sussex v Hampshire | The Ageas Bowl, Southampton | 2021 |
| 183-8 | 88* | Sussex v Somerset | The 1st Central County Ground, Hove | 2023 |
| 183-6 | 64 | Sussex v Hampshire | The 1st Central County Ground, Hove | 2023 |
| 182-5 | 51 | Sussex v Surrey | The 1st Central County Ground, Hove | 2016 |
| 182-6 | 87* | Sussex v Glamorgan | Sophia Gardens, Cardiff | 2023 |
| 181-6 | 46 | Sussex v Essex | The Ford County Ground, Chelmsford | 2012 |
| 181-6 | 61 | Sussex v Essex | The Cloudfm County Ground, Chelmsford | 2018 |
| 181-8 | 59 | Sussex v Middlesex | Lord's Cricket Ground, St John's Wood | 2023 |
| 181-2 | 68 | Sussex v Essex | The Cloud County Ground, Chelmsford | 2024 |
| 180-6 | 56* | Sussex v Essex | County Ground, Hove | 2003 |
| 180-8 | 37 | Sussex v Hampshire | The 1st Central County Ground, Hove | 2022 |
| 179-9 | 91 | Sussex v Middlesex | The Brighton and Hove Jobs County Ground, Hove | 2015 |
| 178-7 | 39 | Sussex v Glamorgan | The SWALEC Stadium, Cardiff | 2014 |
| 178-6 | 61 | Sussex v Kent | Spitfire Ground, St Lawrence, Canterbury | 2015 |
| 178-5 | 77* | Sussex v Gloucestershire | County Ground, Bristol | 2021 |
| 178-5 | 54 | Sussex v Yorkshire | Emirates Riverside, Chester-le-Street | 2021 |
| 177-9 | 47* | Sussex v Middlesex | County Ground, Hove | 2003 |
| 177-2 | 88 | Sussex v Glamorgan | Sophia Gardens, Cardiff | 2018 |
| 177-4 | 82 | Sussex v Hampshire | The 1st Central County Ground, Hove | 2020 |
| 176-7 | 53 | Sussex v Surrey | The Kia Oval, Kennington | 2017 |
| 176-3 | 61 | Sussex v Glamorgan | Sophia Gardens, Cardiff | 2019 |
| 175-6 | 49 | Sussex v Somerset | County Ground, Taunton | 2015 |
| 174-5 | 50 | Sussex v Essex | The Ford County Ground, Chelmsford | 2010 |
| 173-5 | 73 | Sussex v Essex | County Ground, Hove | 2006 |
| 173-4 | 53 | Sussex v Essex | The PROBIZ County Ground, Hove | 2011 |
| 173-9 | 71 | Sussex v Gloucestershire | Arundel Castle Cricket Club Ground, Arundel | 2016 |
| 173 | 58 | Sussex v Gloucestershire | The 1st Central County Ground, Hove | 2025 |
| 172-7 | 59 | Sussex v Somerset | Edgbaston, Birmingham | 2009 |
| 172-8 | 56 | Sussex v Surrey | The Brighton and Hove Jobs County Ground, Hove | 2014 |
| 172-4 | 73 | Sussex v Essex | The 1st Central County Ground, Hove | 2017 |
| 172-2 | 52* | Sussex v Middlesex | Uxbridge Cricket Club Ground, Uxbridge | 2019 |
| 172-5 | 48 | Sussex v Surrey | The 1st Central County Ground, Hove | 2022 |
| 171-9 | 57 | Sussex v Essex | The Essex County Ground, Chelmsford | 2013 |
| 171-5 | 65* | Sussex v Kent | The 1st Central County Ground, Hove | 2022 |
| 170-9 | 46 | Sussex v Gloucestershire | County Ground, Hove | 2010 |
| 169-7 | 50 | Sussex v Hampshire | The 1st Central County Ground, Hove | 2017 |
| 169-5 | 96 | Sussex v Somerset | The 1st Central County Ground, Hove | 2018 |
| 169-8 | 47 | Sussex v Essex | The 1st Central County Ground, Hove | 2022 |
| 169-7 | 53 | Sussex v Kent | The 1st Central County Ground, Hove | 2023 |
| 168-3 | 90* | Sussex v Gloucestershire | Archdeacon Meadow, Gloucester | 2010 |
| 168-6 | 81* | Sussex v Essex | The Ford County Ground, Chelmsford | 2011 |
| 168 | 50 | Sussex v Middlesex | Lord's Cricket Ground, St John's Wood | 2018 |
| 168-7 | 79* | Sussex v Middlesex | Lord's Cricket Ground, St John's Wood | 2020 |
| 168-7 | 47 | Sussex v Gloucestershire | The 1st Central County Ground, Hove | 2024 |
| 167-9 | 44 | Sussex v Kent | County Ground, Hove | 2010 |
| 167-5 | 43 | Sussex v Gloucestershire | The Brighton and Hove Jobs County Ground, Hove | 2015 |
| 167-5 | 73* | Sussex v Kent | Spitfire Ground, St Lawrence, Canterbury | 2017 |
| 167-7 | 39 | Sussex v Hampshire | Utilita Bowl, Southampton | 2025 |
| 166-6 | 47 | Sussex v Kent | The Nevill Ground, Tunbridge Wells | 2010 |
| 166-8 | 58 | Sussex v Somerset | The 1st Central County Ground, Hove | 2025 |
| 165-4 | 79* | Sussex v Surrey | County Ground, Hove | 2008 |
| 165-8 | 48 | Sussex v Middlesex | Lord's Cricket Ground, St John's Wood | 2011 |
| 165-2 | 92* | Sussex v Glamorgan | The Brighton and Hove Jobs County Ground, Hove | 2015 |
| 165-7 | 53 | Sussex v Northamptonshire | The Brighton and Hove Jobs County Ground, Hove | 2015 |
| 165-7 | 45 | Sussex v Surrey | The Kia Oval, Kennington | 2020 |
| 164-6 | 67 | Sussex v Kent | Spitfire Ground, St Lawrence, Canterbury | 2013 |
| 163-6 | 44 | Sussex v Essex | County Ground, Hove | 2007 |
| 163-8 | 71 | Sussex v Middlesex | The PROBIZ County Ground, Hove | 2011 |
| 163-7 | 37 | Sussex v Gloucestershire | County Ground, Bristol | 2019 |
| 163-8 | 69 | Sussex v Gloucestershire | The 1st Central County Ground, Hove | 2019 |
| 162 | 49 | Sussex v Surrey | The Kia Oval, Kennington | 2025 |
| 161-4 | 91 | Sussex v Middlesex | The PROBIZ County Ground, Hove | 2012 |
| 161-2 | 68 | Sussex v Hampshire | The Ageas Bowl, Southampton | 2018 |
| 161-1 | 96* | Sussex v Middlesex | The 1st Central County Ground, Hove | 2024 |
| 160-6 | 60 | Sussex v Gloucestershire | Brightside Ground, Bristol | 2018 |
| 160-9 | 64* | Sussex v Gloucestershire | The 1st Central County Ground, Hove | 2023 |
| 159 | 44 | Sussex v Somerset | County Ground, Taunton | 2010 |
| 159-6 | 89 | Sussex v Kent | St Lawrence Ground, Canterbury | 2011 |
| 159-5 | 56 | Sussex v Hampshire | The Brighton and Hove Jobs County Ground, Hove | 2014 |
| 159-2 | 55 | Sussex v Surrey | The Kia Oval, Kennington | 2018 |
| 159-9 | 66 | Sussex v Essex | The 1st Central County Ground, Hove | 2019 |
| 159-5 | 83 | Sussex v Hampshire | The Ageas Bowl, Southampton | 2020 |
| 158-7 | 34 | Sussex v Surrey | The Brit Oval, Kennington | 2010 |
| 158-3 | 89* | Sussex v Hampshire | The Ageas Bowl, Southampton | 2015 |
| 158-1 | 65* | Sussex v Kent | The 1st Central County Ground, Hove | 2019 |
| 158-7 | 56 | Sussex v Middlesex | The 1st Central County Ground, Hove | 2020 |
| 158-8 | 36 | Sussex v Kent | Spitfire Ground, St Lawrence, Canterbury | 2022 |
| 158-6 | 69* | Sussex v Glamorgan | Sophia Gardens, Cardiff | 2024 |
| 158-9 | 39 | Sussex v Somerset | The Cooper Associates County Ground, Taunton | 2024 |
| 157-6 | 52 | Sussex v Worcestershire | Edgbaston, Birmingham | 2018 |
| 156-4 | 49 | Sussex v Kent | Spitfire Ground, St Lawrence, Canterbury | 2016 |
| 156-8 | 47* | Sussex v Gloucestershire | College Ground, Cheltenham | 2017 |
| 155-7 | 39 | Sussex v Somerset | County Ground, Hove | 2010 |
| 155-1 | 72* | Sussex v Hampshire | The 1st Central County Ground, Hove | 2021 |
| 153-6 | 42 | Sussex v Hampshire | Arundel Castle Cricket Club Ground, Arundel | 2006 |
| 153-5 | 66 | Sussex v Glamorgan | The Brighton and Hove Jobs County Ground, Hove | 2014 |
| 153-6 | 45 | Sussex v Surrey | The Kia Oval, Kennington | 2016 |
| 152-9 | 38 | Sussex v Warwickshire | County Ground, Hove | 2009 |
| 152-8 | 58 | Sussex v Gloucestershire | Seat Unique Stadium, Bristol | 2022 |
| 151-7 | 43 | Sussex v Middlesex | County Ground, Hove | 2008 |
| 150 | 32 | Sussex v Hampshire | The Rose Bowl, Southampton | 2010 |
| 150-2 | 64 | Sussex v Surrey | The 1st Central County Ground, Hove | 2017 |
| 150-1 | 78* | Sussex v Glamorgan | The 1st Central County Ground, Hove | 2019 |
| 150-6 | 81* | Sussex v Glamorgan | The 1st Central County Ground, Hove | 2022 |
