All Black Jordie Barrett says he's "gutted" Wellington Hurricanes teammate Brett Cameron faces another lengthy injury layoff, leaving them with a gaping hole at fly-half.

Floyd Mayweather is coming out of retirement and will return to professional boxing after his exhibition fight with Mike Tyson this spring, the 48-year-old announced Friday.

The Milan-Cortina Games end on Sunday after nearly three weeks of action held over a vast area of northern Italy, with organisers and athletes hailing the most spread-out Winter Olympics in history as a success.

Winger Corey Toole is confident the ACT Brumbies have what it takes to snap a 26-year hoodoo against the Canterbury Crusaders in Christchurch, drawing inspiration from their drought-breaking victory in Auckland last year.