The tireless campaigner defied the odds and surprisingly snared a silver medal in the boys 400m final at the World U-18 Championships currently underway in Nairobi, Kenya.
Russell broke the record 13.13 seconds (-1.1m/s) set by fellow Jamaicans Jaheel Hyde in Donetsk, Ukraine, on July 12, 2013, almost four years to the day.
The also Cubans Yaritza Martinez and Amanda Almendariz advanced to the final in the women's hammer throw event.
Kipkemoi is a Form Three student at the Africa Gospel Church sponsored Liloch Secondary School in Kericho Country and holds personal best time of 5:28.52. Chirchir went on to win the title at the 2000 World Under-20 Championships in Chile.
Lester Lescay was second in the boys' long jump.
In heat two, Lorraine Martins (23.90) of Brazil won the race while German's Talea Prepens (23.93) won heat three.
Shaqueena Foote just managed to squeeze into the girls' final after she finished fourth in her semi-final in 55.21 seconds after a fast start, but was caught and passed inside the last 120 metres from the tape.
In the girls 200m heats, Kenya's sole representative Mary 'Kisii Express' Moraa bowed out of the event after finishing in sixth position in a time of 25.48 in heat one. Ukraine's Vasyl Makukh was second in 21.62.
Brown ran a personal best time of 13.61 seconds, as he finished third in the second semifinal to book an automatic berth in the medal round. "I have seen how they run and they are still a potential threat", warned Manangoi, the brother of World 1,500m silver medallist Elijah Manangoi.