ALASKAN teenager Lydia Jacoby upstaged her 2016 Olympic champion team mate Lily King to win a surprise gold medal in the women’s 100m breaststroke on Tuesday. The 17-year-old pipped Tatjana Schoenmaker to gold, touching in a time of 1:04.95 with the South African 0.27 behind and King in the bronze medal position in 1:05.54.