The introduction of a Sydney University side saw nine teams from across the city contest during the season.

[1] Due to the 1920 Great Britain Lions tour, from rounds 5 to 8, several players in the NSWRFL were selected to play matches for Metropolis (Sydney), New South Wales and Australia.

In a round 7 game between Glebe and University Frank Burge scored eight tries which remains the standing record for the most tries by an individual in a NSWRL/NRL premiership match.

The Balmain Tigers again dominated the season, while University's first year was a disappointment: the Students conceded a whopping 118 tries in thirteen games for a record “tries against” average of 9.08 per match that has not been beaten since.

[2] Balmain played consistently and defensively throughout the season except for a slip-up 13–30 loss to Eastern Suburbs in Round 10.