The 11-time Grand Slam champion has only recently returned to the court after a seven-month injury lay-off with a persistent knee problem but has decided to only play on clay courts as he prepares his bid for an eighth French Open title in May.
Nadal admitted on arriving in Mexico that his knee was still was not 100 per cent.
“It’s better and I’ve been able to compete but it’s still bothering me,” he said.
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