Four meet records fell as early as the heats of the hurdles events of the Schools National Track and Field Championships yesterday morning.
Then in the afternoon finals, three of them were lowered again by the same athletes in a thrilling day of races at Choa Chua Kang Stadium.
Jannah Wong also clinched her sixth consecutive schools national gold medal in the 100m hurdles, winning the A Division girls' race in 14.91sec.
Earlier in the heats, the 17-year-old - who has won the event every year since Secondary 1 - smashed the meet record of 15.03 with a stunning 14.69 effort.
Her time even eclipsed the national junior record of 14.72, set by SEA Games bronze medallist Dipna Lim-Prasad.
"I was aiming to beat my personal best of 15.03," said the second-year student at Raffles Institution (RI). "I was also hoping to break the schools (record), but I didn't expect my timing to be better than the junior record."
Hurdling is second nature to Jannah - her mother Michelle was a hurdler, while her father William is vice-president of the Singapore Athletic Association.
"If I don't do hurdles, it feels like part of my life's missing," she quipped.