German tennis star Alexander Zverev claims Rafael Nadal looked much better in practice at the French Open as he thinks there is something that makes the Spaniard play much better when he is at Roland Garros. Nadal has had a very challenging clay season so far as he was foced to miss Monte Carlo and Barcelona due to an injury. In Madrid, Nadal started his clay season but he didn’t make a really strong run as he was beaten by Carlos Alcaraz in the quarterfinal. Nadal was hoping to do much better in Rome but that didn’ …