The impending grudge match between Jon Jones and Rashad Evans may be fueled by more truly hard feelings than even Anderson Silva vs. Chael Sonnen.

The former training partners under renowned coach Greg Jackson have been steadily stoking a rivalry that began when Jones was awarded a title shot and publicly agreed to defend the title against Evans, should he win. Win he did and would go on to do, defending the title twice against former champions Quinton “Rampage” Jackson and Lyoto Machida.

On the sidelines with injury, the timing has finally lined up to see Evans challenge for the belt. All of the resentment that Evans feels for having been edged out of Team Jackson by the younger fighter will come to a head. The intense desire that Jones has to prove himself over his former mentor will be realized. Though clearly packaged to sell, this is no manufactured beef.

Tonight, on UFC Ultimate Insider on Fuel TV, Jones and Evans will meet face to face for one of the last times before they do battle. Judging by the promo below, the blood is running hot through both men.

Jones and Evans will meet at UFC 145, which takes place on April 21 from the Philips Arena in Atlanta, Georgia.