![epa06439691 Grigor Dimitrov of Bulgaria in action against Dennis Novak of Austria during round one of the Australian Open tennis tournament in Melbourne, Australia, 15 January 2018. EPA/JULIAN SMITH AUSTRALIA AND NEW ZEALAND OUT](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/K6VOF2SPPB3BV6P5TVQQ3RRMBM.jpg?smart=true&auth=4236a1b96a561248a26be4c72f15eae5d856f218529425083e74771580286ac7&width=400&height=225)
Grigor Dimitrov of Bulgaria in action against Dennis Novak of Austria. Julian Smith / EPA
Grigor Dimitrov of Bulgaria in action against Dennis Novak of Austria. Julian Smith / EPA
Australian Open Day 1: Grigor Dimitrov schools Dennis Novak to reach second round
John Isner and Kevin Anderson big-name casualties on Day 1 of Australian Open men's draw