Richmond pair Dion Prestia and Noah Balta have both tested positive to COVID-19 and are in isolation.
The Tigers confirmed on Saturday that close contacts to the premiership duo have been identified and tested.
Richmond’s first-to-fourth year players will start pre-season training on Monday as planned.
Prestia and Balta are not due back for pre-season until December 6.
Hawthorn youngster Finn Maginness and Essendon CEO Xavier Campbell were recently diagnosed with COVID-19.
All AFL and AFLW players, coaches and football department staff must be fully vaccinated to take part in the 2022 season.
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