Solana Sierra defeated Andrea Lazaro Garcia 6–2, 7–5 in the semi-final of the WTA 250 Mallorca tournament on clay on 11 October 2025. Sierra's composed performance across both sets saw her control the opening frame decisively before consolidating her advantage in a tighter second set to secure her place in the final. The result marks a significant progression for Sierra at the event and demonstrates her ability to handle pressure in knockout stages on the clay surface where she has shown growing confidence this season.