The 1920–21 Prima Categoria season was won by Pro Vercelli.

Regulation

Struggles between minor and major clubs continued, more, they went out of control. The regional FAs expanded the championship to 64 clubs. The preliminary regional phase became the bulk of the tournament, with even sixteen matchdays and regular regional football champions, while the following national phase was reduced to a spring tournament of eight matchdays. The main tournament was completely divided in five independent sections, and each region had its own football champions. The spots to the national championship were divided according to the agreements between the Regional FAs. National championship was split in four groups of four clubs. Group winners advanced to the final four. The whole tournament could have twenty-two matchdays. The experimental Southern groups had their own special regulations.

Teams

Regional FAs agreed to expand the league to 64 clubs. They variously chose to promote, re-elect, or invite clubs to fill the spots they had been granted to.

Pre-league qualifications

Liguria

Round 1

Round 2

Verdicts

Rivarolese and Sestrese were admitted to the 1a Categoria.

Northern Italy

Qualifications

Liguria

Classification

Rivarolese was demoted by the Federazione Italiana Giuoco Calcio after incidents caused by its supporters during the match Rivarolese-Savona (0–2). Rivarolese's remaining matches were all considered forfeits. The side was readmitted to the championship for the following season.

Results table

Piedmont

Group A

Group B

Qualification playoff

US Torinese qualified for the Northern Italy semifinals. Casale resigned from the FIGC.

Regional final

Lombardy

Group A

Group B

Group C

Group D

The match was voided due to irregularities.

Group E

Group F

Final round

Veneto

Group A

Group B

Relegation playoff

Final round

Emilia

Group A

Group B

Regional Finals

Since the aggregate rule wasn't applied, a tie-breaker was needed.

Qualification play-off

Relegation playoff

Semifinals

Group A

Classification

Results table

Group B

Classification

Results table

Qualification playoff

Group C

Classification

Results table

Qualification play-off

A tie-breaker was due, but both Legnano and Torino decided to retire from the championship and to resign from the FIGC.

Group D

Classification

Results table

Finals

Round 1

Bologna F.C. advanced directly to Round 2 due to Torino and Legnano's retirement. Alessandria resigned from the FIGC.

Round 2

Bologna resigned from the FIGC.

Southern Italy tournament

An experimental amatorial tournament was played in Southern Italy.

Final round

Livorno resigned from the FIGC.

National final

Both teams resigned from the FIGC.

Footnotes

References and sources