Cricket: Blackcaps sweating as Tim Southee suffers broken thumb on eve of World Cup

The Blackcaps will be sweating on another injury after Tim Southee suffered a broken bone in his right thumb - 20 days out from the start of the Cricket World Cup in India.

Southee suffered the injury fielding in the slips during the Blackcaps' fourth ODI against England and left the field in the 14th over of the hosts' innings at Lord's.

The 34-year-old didn't return to the field at all, as initial scans showed a dislocated and fractured bone in his right hand.

Tim Southee treated after an injury against England.
Tim Southee treated after an injury against England. Photo credit: Getty Images

Further assessment will be needed to determine the extent of Southee's injury, with an update expected on Sunday (NZ time).

Southee was named to head to the World Cup for the fourth time but now how involved he'll be in the tournament remains to be seen.

Losing Southee would only add to mixed news on the injury front for the World Cup.

Earlier this year, captain Kane Williamson appeared all but certain to miss the tournament after suffering a ruptured anterior cruciate ligament playing in the Indian Premier League.

However, the veteran has defied all recovery timelines to be declared fit and named to lead New Zealand to the tournament.   

Michael Bracewell, though, has been ruled out entirely after he ruptured his right Achilles playing Twenty20 cricket for Worcestershire.

Southee wasn't the only Blackcap to go down injured in the fourth ODI, either.

Daryl Mitchell suffered a dislocated ring finger taking a catch, although he did return to the field and was able to bat - making a laboured four runs from 14 balls before he was dismissed.

Finn Allen also suffered a cut on his right hand while fielding as a substitute for Mitchell but has been cleared of any serious damage, but was not named to travel to India for the World Cup.

The Blackcaps open the Cricket World Cup, facing England on October 5 at Ahmedabad's Narendra Modi Stadium.