Holger Rune looking forward to 'tough' Sofia Open final after Jannik Sinner retires from ATP semi with injury
Holger Rune progressed to the final of the Sofia Open on Saturday after Jannik Sinner was forced to retire from their semi-final clash with an ankle injury. Rune was 5-7 6-4 5-2 up in a hard-fought encounter when defending champion Sinner called the action to a halt. Ad The 19-year-old will make his second ATP Tour final appearance of the season on Sunday, after winning his first title in Munich in April.


