Jannik Sinner has raised concerns ahead of the final at the Six Kings Slam. The world No. 1 earned his second win over Novak Djokovic in just five days as he beat the 24-time Major champion in Thursday’s semi-final.

While the win at the inaugural exhibition event in Riyadh will not count towards the pair's official ATP Tour head-to-head record, Jannik Sinner maintained his fine recent form against Novak Djokovic

Less than a week after Jannik Sinner defeated Novak Djokovic in the Shanghai Master finals, the two players met again in the Six Kings Slam semifinals. The end result was the same. Sinner downed Djokovic in straight sets: 6-2, 6-7, 6-4. Sinner did not face ...