Riyadh’s typically faster, lower-bounce conditions favor first-strike pairs, and Zapata/Cabeza Teres look the more stable duo to impose tempo early. Castaño/Jofre will need to survive the opening games, win the backhand-side battles, and turn it into longer, high-volume exchanges. Prediction: Zapata/Cabeza Teres in a tight match, likely decided by a few break-point sequences.