Former world No. 1 Kim Clijsters says she is excited about the emergence of Carlos Alcaraz as the 19-year-old’s start to his career reminds her of the start Rafael Nadal had nearly 20 years ago. Just like Nadal, Alcaraz became a Masters champion and a top-10 at the age of 18. Last week in Madrid, Alcaraz clinched his first win over his idol Nadal. Nadal won their first two meetings but Alcaraz won their third clash. After beating Nadal, Alcaraz also defeated world No. 1 Novak Djokovic and Germany’s Alexander Zverev to win his first …