
4. Big Foot Silva
Big Foot Silva is the only guy in the UFC who should be given an exemption for testosterone replacement therapy. Silva was born with acromegaly, a condition which causes the pituitary gland to excrete an abnormal amount of growth hormone. The condition also can cause low testosterone. For years Silva fought while receiving testosterone to combat the condition, but USADA no longer allows this.
Since defeating Fedor in Strikeforce, Big Foot has really struggled. His dramatic win over Alistair Overeem notwithstanding, Silva has gone 3W-7L-1D since beating Fedor.
Unfortunately under the new USADA regime, Big Foot will never be the same.
