Former West Indian captain Brian Lara was taken to hospital in Mumbai with chest pains.
One of the best scouts in the game's history, he is in India to perform media tasks during the World Cup.
Lara, 50, holds the records for the highest individual innings in both the first-and-first-class cricket and tests.
"Our prayers go to Brian Lara, who was hospitalized in Mumbai for chest pains," said a Twitter statement from Cricket West Indies.
"On behalf of everyone at the Cricket West Indies, we wish for a speedy recovery."
Lara is considered one of the biggest scouts the game has ever seen
He racked up 11,953 races in 131 tests – which was a world record until he was overtaken by Indian batsman Sachin Tendulkar in October 2008 – and another 10,405 in 299 one-day international races.
In 1994 he made the highest first-class score – 501 not out – of Warwickshire against Durham in Edgbaston and 10 years later compiled an unbeaten record of 400 against England in Antigua.