Toronto Maple Leafs captain Auston Matthews is confident in the United States men's hockey team and its chances of capturing a gold medal at next month's Milan Cortina Winter Olympics.

The Australian Open suffered more disruption Tuesday when it hit its maximum "heat stress" rating with forecasts of 45C.

The launch of the tournament was held in Rio de Janeiro. Legends such as Cafu and Ronaldo, who led Brazil to the 2002 World Cup in South Korea, were present.

Paris Saint-Germain confirmed the signing of teenage talent Dro Fernandez from Barcelona on Monday.

Steve Borthwick's men are second favourites for the Championship behind France.