Muchova needed to defend 5 break factors to come back via the primary set however was overpowered within the second.
Sabalenka then broke within the opening recreation of the third set, however world quantity 49 Muchova refused to permit the three-time Grand Slam champion out of sight.
Belarusian Sabalenka had not been overwhelmed since 10 August, successful the Cincinnati Open and US Open, external throughout that interval, but it surely was Muchova who discovered an additional gear to win 4 video games in a row and take a step nearer to her first WTA title of the 12 months.
In Friday’s different quarter-final, Zheng executed a exceptional turnaround to defeat Russia’s Andreeva.
World quantity 22 Andreeva gained the primary 4 video games of the opener, however misplaced the next 5 and needed to wrap up the set by way of a tie-break.
Zheng, who gained gold on the 2024 Paris Olympics, had a renewed vitality when the second set started – recording a bagel to stage the match.
Andreeva appeared to have wrestled again management when main 4-2 within the third till world quantity seven Zheng gained 4 video games in a row to e book her spot within the semis.