The World number one beat Croatian Donna Vekic 6-3 4-6 7-6 (7-4) at the Porsche Tennis Grand Prix.
Osaka will now face Anett Kontaveit, who was able to progress after Victoria Azarenka retired.
Petra Kvitova will face Kiki Bertens in the other semi-final.
Baptiste's variety drags Sabalenka out of comfort zone in Madrid shock
Hailey Baptiste offered a glimpse of how Aryna Sabalenka can be unsettled on clay after mixing forays to the net with changes of pace to save six match points and prevail over the world number one in their Madrid Open quarter-final on Tuesday.
FIFA to increase financial distribution to all 48 World Cup teams by 15%
Amid widespread complaints about the cost of tickets and transportation related to World Cup games, FIFA announced Tuesday that it will hike the money received by all 48 teams participating this summer by 15 per cent.
Sabalenka stunned by Baptiste in Madrid Open quarter-finals
World number one Aryna Sabalenka has suffered a shock 2-6 6-2 7-6(6) defeat by Hailey Baptiste at the Madrid Open on Tuesday as the American produced the biggest win of her career after saving six match points to reach the semi-finals for the first time.
Palestinian football body appeals to sports court over FIFA Israel ruling
The Palestinian Football Association has appealed to the Court of Arbitration for Sport against FIFA's decision not to sanction Israel over clubs based in West Bank settlements, a senior PFA official said on Tuesday.
Holders PSG edge Bayern 5-4 in record-breaking semi-final first leg
Defending champions Paris St Germain has battled past visitors Bayern Munich 5-4 in a pulsating Champions League semi-final first leg on Tuesday that had a record number of goals at this stage of the competition.
His Highness Sheikh Mohammed bin Rashid Al Maktoum, Vice President and Prime Minister of the UAE and Ruler of Dubai, has approved the launch of a national programme that aims to strengthen supply chain resilience in the country and maintain its stability.
UAE President His Highness Sheikh Mohamed bin Zayed Al Nahyan has discussed strengthening cooperation with Swedish Prime Minister Ulf Kristersson during a phone call on Tuesday.
The UAE's Ministry of Economy and Tourism has blocked 13,667 pirate websites for violating copyright laws in the first quarter of 2026.
