After being sent in to bat first, the Japanese innings got off to a disastrous start with a mix-up on the first ball between the openers leading to Shizuka Miyaji being run out without facing a ball.
The Vanuatu bowlers then did the rest of the work along with a strong fielding effort that saw them bowl the more experienced Japan out for just 61.
Navaika then backed up her bowling performance with 15 not out to pick up the Player of the Match and a four wicket win for Vanuatu which she brought up with a big six down the ground.
