With restrictions easing, the Australian Open can play before a full house.

Novak Djokovic after winning the Australian Open men’s singles title in Melbourne in February. Credit...Andy Brownbill/Associated PressTwo of Australia’s biggest sports events — the Australian Open tennis tournament and the annual Boxing Day cricket test match in Melbourne — will be allowed to take place before full-capacity stadiums as part of an easing of coronavirus restrictions.

With 90 percent of people over 16 expected to be fully vaccinated by this weekend in the state of Victoria, of which Melbourne is the capital, the authorities are easing pandemic-related rules, including capacity limits for public events.

Events with up to 30,000 spectators can be held without state government…