Amritraj had castigated the DLTA's decision to host matches in the evening, insisting that India had given up on home advantage by not competing against the superior Spaniards in the day time.
Paes argued that it's only a myth that players with the calibre of Rafael Nadal and David Ferrer can be worn down by heat as they are the marathoners of world tennis who can slug it out for hours in tough conditions.
"It's a very smart (decision) to play in the evening. You always have to look after your own strengths. During the Korea tie, three of the four singles players were lying on the ground. Facts are facts. In the last two months, Saketh has played two five-setters and in both he had cramps," Paes said after a practice session with the Indian team.
The 43-year-old said Myneni should be praised for managing to win that second rubber against Yong-Kyu Lim after a bout of severe body cramps.
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India now are fighting for a place in the elite World Group for the third consecutive year but again they are likely to remain in the Asia/Oceania zone since beating Spain is an uphill task.
"It's perspective. You have to be realistic. You have to look at the extended group, whether singles or doubles. In singles we've always had one single player. On the whole we have improved, we are best in Asia, have put a stamp on that. Korea are a tough bunch, Chinese Taipei. Asia is tough," he said choosing not to be harsh on the singles players.