Cricket legend Sachin Tendulkar called on Indians to keep sport "free from personal attacks" after a national team player from the minority Sikh group suffered a torrent of online abuse for dropping a catch in a match against Pakistan.

Most of the vitriol directed against Arshdeep Singh, after he dropped an easy catch at a crucial moment in the Asia Cup clash on Sunday, focused on the fact that he is from India's Sikh minority.

His Wikipedia entry was briefly altered to link him to the Khalistan Sikh separatist movement and Twitter users accused him of having ties to Pakistan.

There were also large numbers of tweets supporting him.

Former player Tendulkar, the top run-scorer of all time who still enjoys huge adulation in India, tweeted on Tuesday that all "athletes representing the country give their best and play for the nation always.

"They need our constant support & remember, that in sports you win some & you lose some. Let's keep cricket or any other sport free from personal attacks," he wrote.

Tendulkar, 49, who is from India's Hindu majority, also tagged 23-year-old Singh, telling him to "keep working hard."

It is not the first time that cricketers from Hindu-majority India's religious minorities have faced such attacks.

Last year, Muslim player Mohammed Shami became a target of abuse after India was thrashed by Pakistan in the T20 World Cup.

India's hopes of qualifying for the Asia Cup final on Sunday are all but over after defeat to Pakistan was followed by losing to Sri Lanka on Tuesday in Dubai.

If Pakistan beats Afghanistan later Wednesday, it will knock out India and face Sri Lanka in Sunday's final.