Alcaraz, who defeated Khachanov in the quarter-finals, is currently leading the match 1-0.
The Spaniard holds a dominant record against Rublev, winning four of their five meetings, particularly on hard courts.
Alcaraz leads Rublev 1-0 in Doha ATP match
Carlos Alcaraz aims for his second final of 2026 after securing a 7-6 first set victory over Andrey Rublev in their Doha ATP 500 semi-final.