'Peace is our motive,' said the organiser of the tournament.
Imran Khan's government has promised to grant citizenship to foreign nationals who were born in Pakistan, including millions of Afghan refugees.
An UN delegation accompanied by Pakistani film actress Mahira Khan visited Afghan refugees in Pakistan and committed to providing them with education.
The drive to register the estimated 600,000 to 1 million Afghans will bring benefits and security to all sides of the issue.
The situation in Pakistan is improving, the UN High Commissioner for Refugees says.
More than 82,000 families were displaced by the militancy in North Waziristan. Now they are returning home.