Eala and Semenistaja, the fourth-seeded pair of the tournament, had to work and dig deep to secure the first set.
The pair then breezed through in the second set as they barged into the final round.
The Filipino-Latvian pair won 38 service points compared to 36 for Imamura and Sato.
The Japanese duo, however, won 33 receiving points against 31 for Eala and Semenistaja.
Imamura and Sato also committed two double faults but had a service ace.
Waiting for the winning pair is the top-seeded team of Great Britain’s Naiktha Bains and Hungary Fanny Stollar.
Bains and Stollar won over India’s Rutuja Bhosale and Ankita Raina, 7-5, 6(3)-7, 10-1 in the semifinals.
Earlier in the day, Eala was defeated by Semenistaja in the women’s singles quarterfinals.
The final round will be on Saturday. — Ralph Edwin Villanueva
*****
Credit belongs to: www.philstar.com