Athletics - Japan prodigy Sani Brown eyes big scalps in London

Jul 19, 2015, Cali, Columbia; Abdul Hakim Sani Brown (JPN) celebrates after winning the 200m in a championship record 20.34 during the 2015 IAAF World Youth Championships at Estadio Olimpico Pascual Guerrero. Kirby Lee-USA TODAY Sports

TOKYO (Reuters) - Japanese teenager Abdul Hakim Sani Brown is eyeing bigger scalps at the world championships in London after completing an impressive sprint double of national titles over the weekend.

In pouring rain, the 18-year-old upset members of Japan's Olympic silver medal-winning 4x100 metres relay team to win the 100m in a personal best 10.05 seconds in Osaka on Saturday.