Turun sebagai pilihan ketujuh, Pearly dan Thinaah mara ke pusingan kedua selepas menang mudah ke atas pasangan dari India, Simran Singi-Ritika Thaker dalam perlawanan straight set yang berlangsung selama 27 minit dengan keputusan 21-15, 21-11.
Their victory has caused a lot of excitement back home, where women's doubles has not really been a strength of the badminton-crazy Asian nation.
Thinaah has vowed to bounce back in the team meet.
Pertukaran corak permainan di set kedua menghukum beregu negara itu apabila tumpas 17-21, sebelum mereka kehabisan tenaga di set penentuan dan kalah mudah 9-21 di Birmingham Arena.
Earlier, the start of the 111th edition of the prestigious tournament was delayed for five hours following a number of positive and inconclusive Covid-19 test results.
Malaysia will play Denmark on October 9 at 1.