Professional tennis on the ATP and WTA tours has been suspended until August because of the coronavirus pandemic.
The US Open, which takes place in New York at the end of August, remains pencilled in for that date.
All ATP tournaments in July have been suspended, including the Hamburg Open - a third-tier 500 level event.
WTA events in Bastas, Bucharest, Lausanne and Jurmala have been called off, with a similar event in Palermo on 20 July set to follow.
No professional tennis has been played since the end of February, with the French Open and Wimbledon among those events called off.
Wimbledon, which was due to start on 29 June, was cancelled for the first time since World War Two.
French Open organisers announced their intention to play the clay-court Grand Slam, which should have started on 24 May, in late September and early October instead.
In theory, it would take place after the North American hard-court season, which culminates with the US Open at Flushing Meadows.
The hard-court events in the United States and Canada remain in place for now. The extended suspension runs up to the WTA event in San Jose and the ATP event in Washington on 3 August.
These tournaments are followed by the Rogers Cup - which is split across Montreal and Toronto - and the Cincinnati Open, events which are both categorised among the biggest outside of Grand Slams.