Andy Murray will aim to maintain his 100% record against Australia's Bernard Tomic when the pair meet in the last 16 of the Australian Open on Monday.
The world number two will have to refocus after his father-in-law Nigel Sears collapsed at the tournament.
Murray went to hospital after his third-round win over Joao Sousa to visit Sears, who is due to be released.
The Scot, who has beaten 16th seed Tomic in their three previous meetings, plays at 08:00 GMT on Rod Laver Arena.
Murray last beat 23-year-old Tomic when the pair met in the Davis Cup in Glasgow last year.