Sebastian Baez of Argentina, ranked 64th, faces Nuno Sanchez Izquierdo in the Prostejov semi-finals on clay. Baez has shown mixed form recently, winning convincingly against Boyer and Gueymard Wayenburg but suffering losses to Michelsen and Carreno-Busta. The Argentine will look to capitalize on his superior ranking and recent victories on the clay surface in Prostejov.

Nuno Sanchez Izquierdo, ranked 235th from Spain, arrives at the semi-finals after a solid run through the Prostejov draw. The Spanish player has won three of his last five matches, including impressive victories over Pavlovic and Shevchenko, though he experienced a significant loss to Jorda Sanchis. This marks the first career meeting between Baez and Sanchez Izquierdo, with no previous head-to-head record.