Naomi Osaka is still in awe of Serena Williams despite leading their head-to-head encounters 2-1

The duo meet in a tantalising semi-final at the Australian Open this afternoon with Williams looking to move a step closer to the brink of a record-equalling 24th Grand Slam title.



First serve's at 4pm.

The other semi has Czech Karolina Muchova taking on American Jennifer Brady.