Australia mounted a thrilling comeback to secure a 6-5 victory over Zambia, despite trailing multiple times, including by five goals to two after 56 minutes.
Matildas captain and Arsenal defender Steph Catley was instrumental, scoring twice and providing two assists, while Kyra Cooney-Cross also contributed an assist.
All three Arsenal players completed the full match, with Caitlin Foord nearly scoring several times and winning the penalty that Catley converted.
Mariona Caldentey featured again for Spain, who clinched a 1-0 victory over Nigeria thanks to a late free-kick by Alexia Putellas. Laia Codina remained on the bench as an unused substitute.
In the later matches, Emily Fox kept her place for the USA in a 4-1 win against Germany. Fox was substituted in second half injury time.
Cloe Lacasse was an unused substitute in Canada’s 2-1 win over France, with Vanessa Gilles scoring twice to complete one of many comebacks on a dramatic day of Olympic football.
However, Saturday saw Canada Head Coach Bev Priestman banned for one year and her side docked six points after a drone was used to spy on an opposition training session earlier in the tournament.
Elsewhere, Japan achieved a late 2-1 comeback against Brazil and Colombia beat New Zealand 2-0.