India's Jadeja ruled out of Asia Cup with knee injury
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Jadeja, a left-hander who bats in the middle-order and bowls spin, played a key role in India's victories over Pakistan and Hong Kong to make the Super Four stage.
Left-arm spinner Axar Patel will replace Jadeja in the squad ahead of Sunday's clash against either Pakistan or Hong Kong.
They added Patel would join the team soon in Dubai.
Jadeja made 35 and put on a key 52-run stand with Hardik Pandya as India chased down 148 with two balls to spare against Pakistan.
He then returned figures of 1-15 while bowling in his side's 40-run win over Hong Kong.
The six-nation Asia Cup tournament, hosted by the United Emirates, is a warm-up for this year's T20 World Cup in Australia starting next month.