On Friday March 27, the 2020 Harold Matthews Cup season was cancelled with three rounds left to play due to the COVID-19 pandemic in Australia.
| Round 1 | |||||
| 8 February | Manly Sea Eagles | 40 – 12 | Newcastle Knights | Lottoland | View |
| 8 February | Canberra Raiders | 4 – 14 | Parramatta Eels | Belconnen Oval | View |
| Canterbury Bulldogs | BYE | ||||
| South Sydney Rabbitohs | BYE | ||||
| Western Suburbs Magpies | BYE |
| Round 2 | |||||
| 15 February | Sydney Roosters | 20 – 14 | Western Suburbs Magpies | Henson Park | View |
| 15 February | Balmain Tigers | 4 – 22 | Manly Sea Eagles | Leichhardt Oval | View |
| 15 February | North Sydney Bears | 18 – 10 | Illawarra Steelers | Macquarie Uni Sports Field | View |
| 15 February | Parramatta Eels | 14 – 12 | Cronulla Sharks | Ringrose Park | View |
| 15 February | Canterbury Bulldogs | 52 – 0 | South Sydney Rabbitohs | Belmore Sports Ground | View |
| 15 February | Penrith Panthers | 28 – 4 | Central Coast Roosters | Panthers Stadium | View |
| 15 February | Canberra Raiders | 20 – 8 | St George Dragons | Belconnen Oval | View |
| Newcastle Knights | BYE |
| Round 3 | |||||
| 22 February | Central Coast Roosters | 32 – 6 | South Sydney Rabbitohs | Morry Breen Oval | View |
| 22 February | Sydney Roosters | 10 – 24 | Parramatta Eels | Henson Park | View |
| 22 February | St George Dragons | 10 – 30 | Canterbury Bulldogs | Netstrata Jubilee Stadium | View |
| 22 February | Western Suburbs Magpies | 8 – 18 | Cronulla Sharks | Campbelltown Stadium | View |
| 22 February | Manly Sea Eagles | 10 – 12 | Penrith Panthers | Lottoland | View |
| 22 February | Illawarra Steelers | 10 – 34 | Newcastle Knights | Collegians Sports Centre | View |
| 23 February | North Sydney Bears | 16 – 22 | Balmain Tigers | Macquarie Uni Sports Field | View |
| Canberra Raiders | BYE |
| Round 4 | |||||
| 29 February | South Sydney Rabbitohs | 24 – 18 | Balmain Tigers | Metricon HPC | View |
| 29 February | Western Suburbs Magpies | 20 – 10 | Illawarra Steelers | Campbelltown Stadium | View |
| 29 February | Sydney Roosters | 18 – 24 | Canberra Raiders | Henson Park | View |
| 29 February | St George Dragons | 0 – 44 | Manly Sea Eagles | Mascot Oval | View |
| 29 February | Newcastle Knights | 12 – 34 | Canterbury Bulldogs | Maitland Sports Ground | View |
| 29 February | Central Coast Roosters | 10 – 32 | Parramatta Eels | Morry Breen Oval | View |
| 1 March | Cronulla Sharks | 20 – 34 | Penrith Panthers | PointsBet Stadium | View |
| North Sydney Bears | BYE |
| Round 5 | |||||
| 7 March | South Sydney Rabbitohs | 10 – 30 | Penrith Panthers | Metricon HPC | View |
| 7 March | Parramatta Eels | 18 – 30 | Manly Sea Eagles | Ringrose Park | View |
| 7 March | North Sydney Bears | 16 – 26 | Western Suburbs Magpies | Macquarie Uni Sports Field | View |
| 7 March | Central Coast Roosters | 12 – 12 | Balmain Tigers | Morry Breen Oval | View |
| 7 March | St George Dragons | 10 – 52 | Newcastle Knights | Mascot Oval | View |
| 7 March | Canterbury Bulldogs | 40 – 0 | Sydney Roosters | Belmore Sports Ground | View |
| 8 March | Canberra Raiders | 28 – 40 | Cronulla Sharks | Gungahlin Enclosed Oval | View |
| Illawarra Steelers | BYE |
| Round 6 | |||||
| 14 March | Parramatta Eels | 34 – 6 | Western Suburbs Magpies | Ringrose Park | View |
| 14 March | Manly Sea Eagles | 10 – 14 | Canterbury Bulldogs | New Era Stadium | View |
| 14 March | South Sydney Rabbitohs | 10 – 26 | North Sydney Bears | Metricon HPC | View |
| 14 March | St George Dragons | 26 – 18 | Illawarra Steelers | Mascot Oval | View |
| 14 March | Cronulla Sharks | 42 – 12 | Sydney Roosters | PointsBet Stadium | View |
| 14 March | Newcastle Knights | 14 – 4 | Canberra Raiders | Cessnock Sportsground | View |
| Balmain Tigers | BYE | ||||
| Central Coast Roosters | BYE | ||||
| Penrith Panthers | BYE |