Rafael Nadal warned over one player who can trouble him at French Open by former champion
Rafael Nadal has been warned over the one player left in the French Open draw that can trouble him. The 13-time champion defeated long-time rival Novak Djokovic in four sets on Thursday and now faces Alexander Zverev, but former champion Yevgeny Kafelnikov believes the only man who can worry the Spaniard is in the other half of the draw.