2020 TENNIS GRAND SLAM Australian Open in January and the mid-year Wimbledon, French and US Open competitions.TICKETS: Sign up for alerts for 2020 ticket sales or book a holiday package. Australian Open holidays start from $595 at flightcentre.com or check out the international options at grandslamtennistours.com.WHY GO: Extend your Australian tennis season and follow the champions north with one or more of these iconic competitions. SPLURGE: On-court Australian Open seats are now a thing, but you’ll need to find $38,000 to secure a spot at the finals. Picture: Getty