White Fern Suzie Bates believes the country risks falling further behind other countries if women's cricket is not fully professionalised

England, Australia and India offer contracts and domestic match fees to more players and are ranked one, two and three.

The top 15 New Zealand women receive annual retainers and international match fees.

Bates says they need more investment soon.

Meanwhile Indian skipper Virat Kohli knows they'll have to adjust to New Zealand's unique grounds if they're to succeed here.

The first of five one-day internationals gets underway at McLean Park in Napier today, a ground with short square boundaries.

Naomi Osaka could have her work cut out if she's to set up a US Open final rematch against Serena Williams in the Australian Open semis.

The fourth seed meets sixth seed Elena Svitolina in the quarter finals, having lost twice to the WTA Finals champion last year.

The Black Ferns sevens will be without one of their big names for this weekend's invitational Fast Four Tournament in Hamilton.

Playmaker Kelly Brazier has been ruled out with a calf injury.