| Inns | HS |
| 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 |
| 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 |
| 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 |
| 184-8 | 43 | Sussex v Hampshire | Utilita Bowl, Southampton | 2024 |
| 181-6 | 46 | Sussex v Essex | The Ford County Ground, Chelmsford | 2012 |
| 180-8 | 37 | Sussex v Hampshire | The 1st Central County Ground, Hove | 2022 |
| 178-7 | 39 | Sussex v Glamorgan | The SWALEC Stadium, Cardiff | 2014 |
| 177-9 | 47* | Sussex v Middlesex | County Ground, Hove | 2003 |
| 175-6 | 49 | Sussex v Somerset | County Ground, Taunton | 2015 |
| 172-5 | 48 | Sussex v Surrey | The 1st Central County Ground, Hove | 2022 |
| 170-9 | 46 | Sussex v Gloucestershire | County Ground, Hove | 2010 |
| 169-8 | 47 | Sussex v Essex | The 1st Central County Ground, Hove | 2022 |
| 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 |
| 167-7 | 39 | Sussex v Hampshire | Utilita Bowl, Southampton | 2025 |
| 166-6 | 47 | Sussex v Kent | The Nevill Ground, Tunbridge Wells | 2010 |
| 165-8 | 48 | Sussex v Middlesex | Lord's Cricket Ground, St John's Wood | 2011 |
| 165-7 | 45 | Sussex v Surrey | The Kia Oval, Kennington | 2020 |
| 163-6 | 44 | Sussex v Essex | County Ground, Hove | 2007 |
| 163-7 | 37 | Sussex v Gloucestershire | County Ground, Bristol | 2019 |
| 162 | 49 | Sussex v Surrey | The Kia Oval, Kennington | 2025 |
| 159 | 44 | Sussex v Somerset | County Ground, Taunton | 2010 |
| 158-7 | 34 | Sussex v Surrey | The Brit Oval, Kennington | 2010 |
| 158-8 | 36 | Sussex v Kent | Spitfire Ground, St Lawrence, Canterbury | 2022 |
| 158-9 | 39 | Sussex v Somerset | The Cooper Associates County Ground, Taunton | 2024 |
| 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 |
| 153-6 | 42 | Sussex v Hampshire | Arundel Castle Cricket Club Ground, Arundel | 2006 |
| 153-6 | 45 | Sussex v Surrey | The Kia Oval, Kennington | 2016 |
| 152-9 | 38 | Sussex v Warwickshire | County Ground, Hove | 2009 |
| 151-7 | 43 | Sussex v Middlesex | County Ground, Hove | 2008 |
| 150 | 32 | Sussex v Hampshire | The Rose Bowl, Southampton | 2010 |
