Leaving the 5/10K open to Semenya might be seen as a troll job by the IAAF. They suspect as I do that Caster has to do very little training to run 1:55, but would actually have to put in miles, workouts and even lose weight to compete the 5K, yet probably still would struggle to get under 15:20, being a non-factor against the tiny Africans. Last laugh, IAAF!