Anyway, under the management of Winfried Schafer, which was appointed as Thailand's head coach in July, 2011, Sinthaweechai firmly regained his first team regular in Thailand national team so far, especially in 2014 Asian World Cup Qualifying section which he earned many positive comments from the media and fans regarded to his performances against Australia.
Meskipun Begitu, di bawah manajemen Winfried Schafer, yang ditunjuk sebagai pelatih kepala Thailand pada bulan Juli 2011, Sinthaweechai menjadi kiper reguler kembali di tim pertama timnas Thailand sejauh ini, terutama pada Kualifikasi Piala Dunia Asia tahun 2014, ia mendapat banyak komentar positif dari media dan fans karena penampilannya yang cemerlang saat melawan Australia .