OEIRAS, Portugal (AP)—Juan Martin del Potro reached the Estoril Open semifinals, beating top-seeded Robin Soderling 6-4, 7-5 Friday in a match interrupted by a three-hour rain delay.Del Potro, a former U.S. Open champion, will play Uruguay’s Pablo Cuevas on Saturday. Cuevas defeated sixth-seeded Thomaz Belluci of Brazil 6-4, 6-2 in this clay-court tournament leading to the French Open.Germany’s Kristina Barrois and Anabel Medina Garrigues of Spain, both unseeded, will meet in Saturday’s women’s final.