Martin stays on course for medal
"Everything's going well. If I stay consistent hopefully I can get a medal," he said.
Jade Rogers was in 11th position in the girls' competition after ninth and 11th-placed finishes in races seven and eight.
In athletics, Georgia Peel missed out on a medal as the 16-year-old could only manage a sixth-placed finish in the final of the girls' 1000 metres. Having qualified second fastest in Thursday's heats, hopes were high Peel could add to Great Britain's haul of eight medals in Singapore. However, Peel was left behind as Ethiopian Tizita Ashame broke away to win gold in two minutes 43.24 seconds.
David Bolarinwa won silver and Annie Tagoe bronze running for Europe in the relay medley, running the 100m in a race that also comprised 200m, 300m and 400m legs.
The Americas won gold in both. Louisa James won the girls' hammer 'B' final with a throw of 53.21m while Zak Seddon set a new personal best time of 5mins 52.13 secs in finishing second the 'B' final of the boys' 2000m steeplechase.