The first round of fixtures saw Thailand, Ireland and Scotland put wins on the board.
Three games were affected by rain, with Bangladesh versus Papua New Guinea abandoned without a ball bowled and rescheduled for Monday 2 September.
Thailand v Netherlands
In the first rain-affected encounter of the day, Thailand beat Namibia by 30 runs at Arbroath in a nine-overs-a-side clash.
Thailand's Chantam (44*) and Chaiwai (26*) struck eight boundaries between them – seven fours and one six – as they raced away to an imposing 76 for none at the end of their innings.
In response, Netherlands could only muster 46 for 5 as Thailand's Chanida Sutthiruang bagged three wickets for five runs in two overs.
Namibia v Ireland
Ireland completed an all-round performance with the bat and ball as they chased down 84 with seven wickets and 33 balls remaining at Arbroath.
Winning the toss and electing to field, Ireland got the best of the moist and windy conditions to take nine wickets (Richardson was the pick of the bowlers with 2-10) as Laura Delany rotated eight bowlers.
Starting well to reach the fifth over unscathed, Namibia will rue missed chances to contribute with the bat as both van der Merwe (14) and Enright (20) were run out when looking comfortable at the crease.
Eight batters for Namibia could only post single figure scores to ensure Ireland were never chasing a total too big.
In reply, Ireland made light work of their chase, losing only three wickets in pursuit of 84. Lewis (26), Garth (22*) and Waldron (33*) picked off the runs easily.
Scotland v USA
On a day that saw torrential rain and the earlier abandonment of Bangladesh versus Papau New Guinea at the same ground, Scotland managed to sneak in a seven-over game against USA thanks to outstanding work from the groundstaff.
Batting first, Scotland smashed 60 for 3 with skipper Kathryn Bryce hitting four boundaries on her way to 29* – complementing her 2 for 5 with the ball – as Scotland pierced the field throughout their innings to build a commanding total and leave USA needing to strike at more than 8.5 an over.
USA could not hit a single boundary throughout their innings as the Scots' attack built pressure with wickets in the first two overs.
Despite five missed chances in the field, regular wickets kept runs at bay and the run-rate creeping higher as USA reached 30 for 5 at the close to hand Scotland a 30-run victory.