AFTER a short vacation with family and friends, Alexandra “Alex” Eala returns to home base at the Rafael Nadal Academy (RNA) in Spain to rev up for bigger clay tournaments led by the French Open later this month. “RNA, the best,” posted the 20-year-old Filipina pride on Instagram after reuniting with her coaches at the tennis school of the Spanish legend. Ms. Eala roamed around Madrid, where she also graced the Laureus World Sports Awards as a d…