Caster successfully reclaimed the South African 800-meter title on Saturday . Olympic silver medalist swam in 2 heats , 5.05 near national stadium . super - hit Semenya is aiming to qualify for the World Championships .
Caster Semenya reclaimed the South African 800-meter title on Saturday . Olympic silver medalist won in 2 minutes , 5.05 near Cape Town . Injury-hit Semenya is aiming to qualify for the World Championships .