CRUISE CONTROL: South African 800m star Caster Semenya, right, won her 800m heat

SOUTH Africa’s golden girl Caster Semenya turned in a controlled performance to earn her spot in the women’s 800m semifinal at the Rio Olympic Games.

Semenya posted the sixth fastest time of the heats, winning her race in a time of 1:59.31 march into tonight’s elimination round.

And she will be even faster.

With temperatures on track side hitting 33 degrees, she did not have too expend to much energy to give her a shot at upgrading her silver medal from London 2012 to the gold she so desperately wants, and maybe even a new world record (1.53.28).

Caster says: “It wasn’t easy, it was pretty hot outside, I was just trying to hang on and trying to feel my body first so that I can feel comfortable.

“I just tried to get a top two and in the last 200m tried to win so that I can be safe for the semifinals.”