Evidence continues to stream out of Belarus which makes it harder to predict Olympic shot put gold for Valerie Adams.
The latest results on the International Athletics Federation website show Adams' key rival Nadzeya Ostapchuk threw 21.58m in Minsk on July 18. The distance is 47cm more than Adams has thrown this season and 34cm further than her career best which she set at last year's world championships.
Ostapchuk now has the three best throws (21.58m, 21.39m and 21.13m) this year. She last threw more than 21m in 2005.
On May 31 in Rome, Adams seemed an unbackable favourite to defend her Olympic title. She threw 21.03m, obliterating Chinese rival Lijiao Gong by 1.24m and Ostapchuk by 1.45m.
Ostapchuk has awoken since. The pair now have the 11 best throws this season. No one else has thrown beyond 20.22m.