India's women boxers Nitu (48kg) and Manisha (57kg) advanced to the quarter-finals of the IBA World Championships in Istanbul, after registering contrasting victories on Saturday.
The 24-year from Assam, going by her strategy of using her long hands to reach the opponent from afar, was unable to penetrate Ngamba defence.
The 21-year-old from Haryana then landed a flurry of punches in the third round as the last three minutes were closely-fought between the two. But Nitu defended tightly and looked in control to emerge victorious.