Current record holder: Betty Heidler (Germany) - 79.42 metres
Who'll beat it? Betty Heidler
Ok, you may not have heard of her, but Betty Heidler is currently bossing the world of female hammer throwing. She smashed the previous record by over a metre in May 2011 and has dominated ever since. She's also several metres clear of her nearest rival so, barring a loss of form or an astronomical throw from a rival, including Polish former record holder Anita Wlodarczyk, will take home the gold. But can she take the ultimate prize and crash through the 80m barrier? We'll find out on 10th August.