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Spain's Rafael Nadal (L) cools himself with an ice pack during his doubles tennis match with teammate Feliciano Lopez (R) against India's Leander Peas and Saketh Myneni at the Davis Cup World Group tennis playoffs between Spain and India in New Delhi on September 17, 2016. / AFP / SAJJAD HUSSAIN (Photo credit should read SAJJAD HUSSAIN/AFP/Getty Images)

Spain's Rafael Nadal (L) cools himself with an ice pack during his doubles tennis match with teammate Feliciano Lopez (R) against India's Leander Peas and Saketh Myneni at the Davis Cup World Group tennis playoffs between Spain and India in New Delhi on September 17, 2016. / AFP / SAJJAD HUSSAIN        (Photo credit should read SAJJAD HUSSAIN/AFP/Getty Images)

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Spain's Rafael Nadal cools himself with an ice pack during his doubles tennis match with teammate Feliciano Lopez against India's Leander Peas and Saketh Myneni at the Davis Cup World Group tennis playoffs between Spain and India in New Delhi on September 17, 2016. / AFP / SAJJAD HUSSAIN (Photo credit should read SAJJAD HUSSAIN/AFP/Getty Images)

Spain's Rafael Nadal cools himself with an ice pack during his doubles tennis match with teammate Feliciano Lopez against India's Leander Peas and Saketh Myneni at the Davis Cup World Group tennis playoffs between Spain and India in New Delhi on September 17, 2016. / AFP / SAJJAD HUSSAIN        (Photo credit should read SAJJAD HUSSAIN/AFP/Getty Images)