ICC World Cup 2023: Williamson blow for Kiwis as skipper fractures thumb in freak accident

New Zealand captain Kane Williamson has been ruled out of the team's immediate World Cup matches with a fractured thumb, but head coach Gary Stead is optimistic the batter will be back in action at some stage of the tournament.

After spending nearly seven months on the sidelines with a knee injury, Williamson made a sparkling 78 not out in his return to action in the team's comprehensive victory against Bangladesh on Friday.

The 33-year-old, however, was struck by a throw while running between the wickets during the match, which now makes him uncertain for the tournament.

Tom Blundell will travel to India as cover, but Williamson will remain with the team with the hope of being available for the back end of group play next month, New Zealand Cricket said in a statement on Saturday.

"Firstly, we're all feeling for Kane to have this occur after all his hard work to return from his knee injury," Stead said.

"While it's disappointing news, the initial diagnosis has given us some optimism he can still feature later in the pool play following a period of rest and rehabilitation.

"Kane is clearly a massive part of our side and a world class player and captain - so we'll look to give him every opportunity we can to return in the tournament."

Blundell was picked ahead of Henry Nicholls, who suffered a mild side-strain during a Plunket Shield warm-up match the week.

The 2019 runners-up have kicked off their campaign for a maiden World Cup title with a hat-trick of victories. They face Afghanistan in their next match in Chennai on Wednesday.