Nigeria's Gift Bright and Rosemary Nwankwo claimed the men's and women's 100m titles as athletics got under way at the Youth Olympic Games in Dakar on Sunday (8).

Just 15 years old, Bright produced a Games record of 10.28 (1.7m/s) to win the men's final, improving on the 10.34 he had clocked in the semifinals earlier in the day. China's Hangyu Zhang finished second in 10.57, while Poland's Szymon Dolega took third in 10.61.

Nwankwo completed the Nigerian sprint double with a wind-assisted 11.16 (2.4m/s) in the women's final, finishing ahead of UAE's Arwa Ali (11.41) and Qatar's Dana Salem (11.48).

Another Games record fell in the women's 100m hurdles, where China's Keyi Zhang clocked an Asian U18 record of 13.17 (0.1m/s). She finished 0.40 clear of France's Anna Peeters, who took silver in 13.57.

Kenya also enjoyed a successful opening day, claiming two titles in the distance events, both at the expense of Ethiopian opposition.

Abigael Kosgei won the women's 2000m steeplechase in a world U18 lead of 6:30.24, with Ethiopia's Tsedikan Mekonen second in 6:32.15.

Enock Tuitoek then secured Kenya's second gold, winning a close men's 3000m contest in 8:07.69. Ethiopia's Goytom Mekonen finished just 0.55 behind, clocking a PB of 8:08.24.

Two European U18 champions added Youth Olympic gold medals to their collections. France's Julie Bourgis cleared 4.20m to win the women's pole vault, while Cyprus's Marina Hadjicosta took the discus title with a throw of 53.20m.

Spain's Gift Okunrobo, a double medallist at the European U18 Championships earlier this year, also struck gold in the women's triple jump, winning a close contest with a leap of 12.69m.