Jannik Sinner will play Carlos Alcaraz in a final for the fourth time this season after both players secured straight-sets wins in their Cincinnati Open semi-finals.
Defending champion Sinner, celebrating his 24th birthday, did not face a break point in a 7-6 (7-4) 6-2 win over Terence Atmane.
Alcaraz won 6-4 6-3 against an ailing Alexander Zverev, who struggled in the heat and humidity.
The Spaniard has come out on top in two of their three finals this season - in Rome and Roland Garros - while Sinner was victorious at Wimbledon in July.