We all know that Phelps is n't on top form this year .
Phelps has still been dominant in Phelps ' pet event and this will mark the first time since 2005 that Phelps has n't led the world rankings at the year 's end .
We all know that Phelps is n't on top form this year , but he has still been dominant in his pet event and this will mark the first time since 2005 that Phelps has n't led the world rankings at the year 's end .