Rafael Nadal will make his return from injury in Spain's Davis Cup quarter-final against Germany in Valencia on Friday.
The 16-time grand slam champion, who this week moved back to the top of the rankings, has not played since retiring from his Australian Open last-eight encounter with Marin Cilic due to a hip injury.
Nadal will be back in action on clay in his homeland for the second rubber against Germany's number two Philipp Kohlschreiber.
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Asked how close to being 100 per cent fit he is, the 31-year-old said: "I was not very good in mathematics at school. So I don't know about percentages, but I am here to play, and to play as well as possible.
"From the beginning, my idea was to be here, but we have to be respectful with the injury. He [Spanish captain Sergi Bruguera] believes I am ready, and I believe too."
Nadal has not lost a set in five clay-court contests with Kohlschreiber and has a 100 per cent record in his 17 clay-court matches in the Davis Cup.
David Ferrer will face world number four Alexander Zverev in the opening rubber.