Jersey Flegg Cup premierships
11 Canterbury (1963, 1971, 1976, 1979, 1983, 1999, 2000, 2001, 2003, 2023, 2024)
9 South Sydney (1962, 1964, 1966, 1967, 1968, 1969, 1972, 1978, 2019)
8 Balmain (1973, 1980, 1981, 1982, 1984, 1988, 1994, 1997)
5 Penrith (1977, 1986, 2006, 2007, 2022)
3 Manly (1961, 1974, 1987)
3 Parramatta (1970, 1985, 1990)
3 Sydney Roosters (1995, 2002, 2004)
2 Canberra (1989, 1993)
2 St George (1975, 1996)
2 Newcastle (1991, 1992)
1 Cronulla (2018)
1 Melbourne (2025)
1 North Sydney (1998)
1 St George Illawarra (2005)
1 Western Suburbs (1965)

The following records are from 2018–present

Minor Premierships
2 Sydney (2022, 2023)
1 Canberra (2024)
1 Cronulla (2019)
1 Melbourne (2025)
1 Newcastle (2018)

Wooden Spoons
2 Kaiviti Silktails (2024, 2025)
2 Wests Tigers (2018, 2023)
1 Manly (2019)
1 South Sydney (2022)

Finals Appearances
6 Penrith
5 Cronulla
4 Canterbury, Newcastle, Sydney
3 Canberra, Parramatta, St George Illawarra
1 Melbourne, Mounties, South Sydney, Wests Tigers

Most Wins in a Season by a Club
19 Melbourne from 26 games, 2025
19 Penrith from 28 games, 2025
19 Canterbury from 27 games, 2024

Most Wins in the Regular Season
18 Canberra, 2024
17 Melbourne, 2025
17 Cronulla, 2025
17 Sydney, 2023
17 Newcastle, 2018

Least Wins in the Regular Season
0 Kaiviti Silktails, 2024
2 Manly, 2019
2 North Sydney, 2019
2 Wests Tigers, 2018

Most Losses in the Regular Season
24 Kaiviti Silktails, 2024
19 Kaiviti Silktails, 2025
19 South Sydney, 2022

Least Losses in the Regular Season
3 Newcastle, 2018
3 Cronulla, 2018
4 Sydney, 2023
5 Cronulla, 2019

Most Points Scored in the Regular Season
826 Melbourne, 2025
809 Penrith, 2025
742 Canberra, 2025
702 Parramatta, 2025
699 Wests Tigers, 2025

Least Points Scored in the Regular Season
229 Manly, 2019
235 Victoria, 2019
240 Wests Tigers, 2018
246 Kaiviti Silktails, 2024
307 North Sydney, 2019

Most Points Conceded in the Regular Season
920 Kaiviti Silktails, 2024
840 Manly, 2025
762 Kaiviti Silktails, 2025
752 Manly, 2019
736 Victoria, 2022

Least Points Conceded in the Regular Season
300 Cronulla, 2019
313 Penrith, 2018
314 Sydney, 2019
316 Sydney, 2022
348 Canterbury, 2018

Best Points Differential in the Regular Season
+378 Sydney, 2022
+346 Melbourne, 2025
+300 Newcastle, 2018
+272 Sydney, 2023
+271 Penrith, 2025

Worst Points Differential in the Regular Season
-674 Kaiviti Silktails, 2024
-523 Manly, 2019
-392 Manly, 2025
-379 Kaiviti Silktails, 2025
-372 South Sydney, 2024

Most Competition Points
43 Sydney, 2023
42 Newcastle, 2018
40 Canberra, 2024
40 Cronulla, 2018

Least Competition Points
4 Kaiviti Silktails, 2024
10 South Sydney, 2022
12 Manly, 2019
12 Wests Tigers, 2018

Most Consecutive Wins
10 Cronulla (Round 20, 2024 – Finals Week 3, 2024)
9 Sydney (Round 8, 2022 – Round 17, 2022)
8 Parramatta (Round 18, 2024 – Round 26, 2024)

Most Consecutive Losses
26 Kaiviti Silktails (Round 1, 2024 – Round 2, 2025)
12 South Sydney Rabbitohs (Round 18, 2024 – Round 4, 2025)
11 South Sydney (Round 14, 2022 – Round 1, 2023)
11 Victoria (Round 21, 2019 – Round 5, 2021)
11 North Sydney (Round 4, 2019 – Round 16, 2019)
11 Wests Tigers (Round 1, 2018 – Round 13, 2018)

Biggest Winning Margins
68 Penrith 72 def. Victoria 4 at Casey Fields – Rd 5, 2019.
66 Sydney 66 def. Victoria 0 at Casey Fields – Rd 24, 2022.
62 Penrith 62 def. Wests Tigers 0 at Lidcombe Oval – Rd 17, 2024.
60 Melbourne 64 def. Manly 4 at Gosch’s Paddock – Rd 25, 2025.
60 Cronulla 62 def. Kaiviti Silktails 2 at PointsBet Stadium – Rd 24, 2024.