On Tuesday August 10, the 2021 Jersey Flegg Cup season was cancelled after 15 rounds played due to a COVID-19 outbreak in the Greater Sydney region. The season was originally suspended in early July for five rounds before its full cancellation.

Round 1
13 March Victoria Thunderbolts 18 – 28 Canterbury Bulldogs Gosch’s Paddock View
13 March St George Illawarra Dragons 10 – 4 Cronulla Sharks Collegians Sporting Complex View
13 March Penrith Panthers 24 – 16 South Sydney Rabbitohs BlueBet Stadium View
14 March Manly Sea Eagles 12 – 24 Sydney Roosters HE Laybutt Sporting Complex View
Parramatta Eels BYE
Wests Tigers BYE
Round 2
21 March Cronulla Sharks 18 – 10 Victoria Thunderbolts Netstrata Jubilee Stadium View
27 March Canterbury Bulldogs 4 – 50 Penrith Panthers Belmore Sports Ground View
14 May Wests Tigers 18 – 18 Sydney Roosters Leichhardt Oval View
15 May Parramatta Eels 12 – 32 St George Illawarra Dragons Ringrose Park View
12 June South Sydney Rabbitohs 4 – 10 Manly Sea Eagles Stadium Australia View
Round 3
27 March Victoria Thunderbolts 12 – 50 Wests Tigers Casey Fields View
27 March Manly Sea Eagles 20 – 28 St George Illawarra Dragons Lottoland View
27 March South Sydney Rabbitohs 30 – 16 Sydney Roosters Ironmark High Performance Centre View
27 March Parramatta Eels 18 – 26 Cronulla Sharks McCredie Park View
Canterbury Bulldogs BYE
Penrith Panthers BYE
Round 4
2 April Cronulla Sharks 20 – 10 Sydney Roosters PointsBet Stadium View
2 April Canterbury Bulldogs 24 – 25 South Sydney Rabbitohs Stadium Australia View
3 April Manly Sea Eagles 20 – 26 Penrith Panthers Lottoland View
3 April Victoria Thunderbolts 12 – 32 St George Illawarra Dragons Casey Fields View
5 April Wests Tigers 40 – 22 Parramatta Eels Campbelltown Sports Stadium View
Round 5
10 April Manly Sea Eagles 30 – 25 Victoria Thunderbolts Lottoland View
11 April Wests Tigers 24 – 24 Canterbury Bulldogs Leichhardt Oval View
11 April Parramatta Eels 24 – 10 Sydney Roosters Bankwest Stadium View
Cronulla Sharks BYE
Penrith Panthers BYE
South Sydney Rabbitohs BYE
St George Illawarra Dragons BYE
Round 6
17 April Penrith Panthers 22 – 23 St George Illawarra Dragons BlueBet Stadium View
17 April Canterbury Bulldogs 40 – 16 Sydney Roosters Belmore Sports Ground View
17 April Manly Sea Eagles 28 – 14 Parramatta Eels Lottoland View
17 April South Sydney Rabbitohs 24 – 28 Wests Tigers Stadium Australia View
18 April Victoria Thunderbolts 18 – 18 Cronulla Sharks Haines Drive Reserve View
Round 7
24 April Parramatta Eels 48 – 12 South Sydney Rabbitohs Ringrose Park View
24 April Penrith Panthers 40 – 20 Victoria Thunderbolts BlueBet Stadium View
24 April Cronulla Sharks 12 – 28 Canterbury Bulldogs Netstrata Jubilee Stadium View
25 April Wests Tigers 26 – 18 Manly Sea Eagles TG Millner Field View
25 April Sydney Roosters 42 – 18 St George Illawarra Dragons Waverley Oval View
Round 8
1 May Cronulla Sharks 30 – 14 South Sydney Rabbitohs PointsBet Stadium View
1 May Canterbury Bulldogs 8 – 12 Parramatta Eels Stadium Australia View
2 May St George Illawarra Dragons 10 – 32 Wests Tigers Ziems Park View
2 May Penrith Panthers 40 – 6 Manly Sea Eagles St Marys Leagues Stadium View
2 May Victoria Thunderbolts 36 – 28 Sydney Roosters Clearwood Drive Reserve View
Round 9
8 May Penrith Panthers 20 – 20 Cronulla Sharks BlueBet Stadium View
8 May South Sydney Rabbitohs 30 – 14 Manly Sea Eagles Ironmark High Performance Centre View
8 May Canterbury Bulldogs 22 – 28 St George Illawarra Dragons Belmore Sports Ground View
8 May Parramatta Eels 20 – 28 Sydney Roosters Ringrose Park View
Victoria Thunderbolts BYE
Wests Tigers BYE
Round 10
All teams BYE
Round 11
21 May Cronulla Sharks 18 – 24 St George Illawarra Dragons Netstrata Jubilee Stadium View
22 May South Sydney Rabbitohs 42 – 14 Penrith Panthers Ironmark High Performance Centre View
22 May Wests Tigers 24 – 24 Victoria Thunderbolts Lidcombe Oval View
22 May Sydney Roosters 14 – 42 Canterbury Bulldogs Mascot Oval View
Manly Sea Eagles BYE
Parramatta Eels BYE
Round 12
29 May Penrith Panthers 12 – 22 Canterbury Bulldogs BlueBet Stadium View
29 May South Sydney Rabbitohs 24 – 18 Parramatta Eels Stadium Australia View
29 May Wests Tigers 30 – 10 St George Illawarra Dragons Lidcombe Oval View
30 May Sydney Roosters 26 – 24 Cronulla Sharks Waverley Oval View
Cancelled Victoria Thunderbolts 20 – 20 Manly Sea Eagles Clearwood Drive Reserve View
Round 13
5 June Canterbury Bulldogs 24 – 14 Cronulla Sharks Belmore Sports Ground View
5 June South Sydney Rabbitohs 16 – 18 St George Illawarra Dragons Ironmark High Performance Centre View
5 June Wests Tigers 32 – 18 Penrith Panthers Lidcombe Oval View
6 June Sydney Roosters 54 – 10 Manly Sea Eagles Waverley Oval View
Cancelled Victoria Thunderbolts 19 – 19 Parramatta Eels AAMI Park View
Round 14
11 June Cronulla Sharks 10 – 17 Penrith Panthers Netstrata Jubilee Stadium View
12 June Parramatta Eels 14 – 30 Wests Tigers Merrylands Oval View
12 June St George Illawarra Dragons 20 – 18 Canterbury Bulldogs Ziems Park View
Cancelled South Sydney Rabbitohs 20 – 20 Victoria Thunderbolts Metricon High Performance Centre View
Manly Sea Eagles BYE
Sydney Roosters BYE
Round 15
18 June Penrith Panthers 22 – 22 Sydney Roosters BlueBet Stadium View
19 June Parramatta Eels 16 – 32 Canterbury Bulldogs New Era Stadium View
19 June Manly Sea Eagles 16 – 18 Cronulla Sharks 4 Pines Park View
Cancelled Victoria Thunderbolts 25 – 25 Wests Tigers Gosch’s Paddock View
South Sydney Rabbitohs BYE
St George Illawarra Dragons BYE
Round 16*
Cancelled Penrith Panthers 0 – 0 Parramatta Eels BlueBet Stadium
Cancelled Canterbury Bulldogs 0 – 0 Manly Sea Eagles Belmore Sports Ground
Cancelled St George Illawarra Dragons 0 – 0 Victoria Thunderbolts WIN Stadium
Cancelled Wests Tigers 0 – 0 South Sydney Rabbitohs Leichhardt Oval
Cronulla Sharks BYE
Sydney Roosters BYE
Round 17*
Cancelled Canterbury Bulldogs 0 – 0 Parramatta Eels Belmore Sports Ground
Cancelled South Sydney Rabbitohs 0 – 0 Cronulla Sharks Ironmark High Performance Centre
Cancelled St George Illawarra Dragons 0 – 0 Manly Sea Eagles Collegians Sporting Complex
Cancelled Victoria Thunderbolts 0 – 0 Penrith Panthers Clearwood Drive Reserve
Cancelled Sydney Roosters 0 – 0 Wests Tigers Waverley Oval
Round 18*
Cancelled St George Illawarra Dragons 0 – 0 Penrith Panthers Collegians Sporting Complex
Cancelled Manly Sea Eagles 0 – 0 Wests Tigers HE Laybutt Sporting Complex
Cancelled Sydney Roosters 0 – 0 Victoria Thunderbolts Waverley Oval
Cancelled Cronulla Sharks 0 – 0 Parramatta Eels PointsBet Stadium
Cancelled South Sydney Rabbitohs 0 – 0 Canterbury Bulldogs Stadium Australia
Round 19*
Cancelled Cronulla Sharks 0 – 0 Wests Tigers Henson Park
Cancelled Manly Sea Eagles 0 – 0 Canterbury Bulldogs 4 Pines Park
Cancelled Penrith Panthers 0 – 0 Parramatta Eels BlueBet Stadium
Cancelled St George Illawarra Dragons 0 – 0 Sydney Roosters Netstrata Jubilee Stadium
Cancelled Victoria Thunderbolts 0 – 0 South Sydney Rabbitohs Haines Drive Reserve
Round 20
All teams BYE
Round 21*
Cancelled Canterbury Bulldogs 0 – 0 Wests Tigers Belmore Sports Ground
Cancelled Cronulla Sharks 0 – 0 South Sydney Rabbitohs Henson Park
Cancelled Sydney Roosters 0 – 0 Penrith Panthers Waverley Oval
Cancelled Parramatta Eels 0 – 0 Victoria Thunderbolts Ringrose Park
Cancelled Manly Sea Eagles 0 – 0 St George Illawarra Dragons 4 Pines Park

*Before the season was cancelled, Rounds 16 to 21 were awarded as draws and each team received one competition point.