Paralympic gold medallists the United States booked their place in the semi-finals with a comfortable victory over South Korea ©USA Hockey

Paralympic gold medallists the United States booked their place in the semi-finals with a comfortable victory over South Korea at the World Para Ice Hockey Championships in the Czech Republic.

The American side, who beat arch-rivals Canada in their opening game yesterday, swept aside the Paralympic bronze medallists 4-0 in Group A at Ostravar Arena.

Jack Wallace, Brody Roybal, Declan Farmer and Noah Grove were on the scoresheet for the US, who have guaranteed their place in the last four with a game to spare.

"We're happy to have two wins against a pair of quality opponents at this point in the tournament," said head coach David Hoff.

"We've put ourselves in a good position for the semi-finals, but I think there are areas of our game we can clean up to help us reach another level of play."

Canada bounced back from their defeat to the US yesterday in style, thrashing Norway 14-2 to record their first win and boost their chances of qualifying directly for the semi-finals.

In Group B, hosts the Czech Republic and Italy maintained their 100 per cent starts to the tournament.

The Czech Republic hammered Sweden 6-1 to continue their high-scoring form following an 8-0 win over Japan yesterday.

Italy beat Japan 5-1 in the other match played today.

The competition continues on Tuesday (April 30) following a rest day tomorrow.