The defending champions were in ruthless form at the Sultan Qaboos Sports Complex and top the round-robin phase with their 100 per cent record.

Mandeep Singh bagged a hat-trick for the Indians as they backed up yesterday's 3-1 win over fierce rivals Pakistan in style.

For Japan, it was straight back down to earth after they opened their account with a first win against South Korea yesterday, 2-0.

Harmanpreet Singh scored twice for India in the rout.

Gurjant Singh, Akashdeep Singh, Sumit and Lalit Upadhyay also got their names on the scoresheet in a one-sided performance.

Malaysia will be looking to join Japan on three victories from three when the tournament resumes tomorrow.

They take on a South Korea side who are yet to get off the mark.

Hosts Oman are also without a win and face a tricky test against Pakistan.

The top four countries at the end of the round-robin will qualify for the semi-finals.