the opening round of four fourball matches started at 7:15 am local time. the first point of the 2018 amata friendship cup was won by team japan, with ryuko tokimatsu and erika hara winning 6 & 5 against prayad marksaeng and moriya jutanugarn. prom meesawat and pannarat thanapolboonyaras came from two down after the fourth and fifth hole to beat masahiro kawamura and mami fukuda two up. jaidee and thidapa suwannapura also won by one against kodai ichihara and sakura koiwai one up. in the last match, aphibarnrat and thitikul won the seventeenth hole to halve satoshi kodaira and yuri yoshida, and to end the first morning 2½–1½ in favour of team thailand.