Key Highlights
- Madison Keys defeated Karolina Pliskova 6-3, 6-3 in the fourth round.
- Keys will face fellow American Jessica Pegula in the next round.
- Temperatures in Melbourne are expected to reach 40C, risking match suspensions.
- Matches have been scheduled an hour earlier than usual due to the heat.
- Novak Djokovic is pursuing a record 25th Grand Slam title at the tournament.