16-year-old Nick Mahabir knocked a second off his own Singapore record from prelims, marking the 3rd time this year that the national record has been broken.
Summer McIntosh qualified for the final nearly five seconds clear of the field in the women's 400 IM, aiming to become the joint world and Commonwealth champ.
In prelims, Metroplex Aquatics 18-year-old Zhier Fan posted a massive personal best of 1:00.64 in the men's 100 breast, qualifying him for the 'A' final.