Pettis (photo via UFC.com)

By FCF Staff

Anthony Pettis called out featherweight champ Jose Aldo, right after he tapped out Benson Henderson at UFC 164, but the newly crowned champ’s next bout could be delayed.

UFC President Dana White revealed in the post-fight presser that Pettis felt his “knee pop” during the main event, and the lightweight has also confirmed the injury. According to Pettis, it is not the same knee that he injured earlier this summer, which forced him to withdraw from an August 3rd fight with Aldo.

Pettis said he felt the knee “go back-and-forth” after he checked a kick attempt from Henderson with his left leg. The 26 year-old also relayed that he felt the knee “lock up a bit.”

As a result of the injury, Aldo is expected to undergo a MRI soon, which should reveal the extent of the damage.

Aldo caught Henderson with a first round armbar ,which forced the highly regarded fighter to verbally submit. Pettis said he felt Henderson’s arm “pop” after the match, and the former champ also revealed his arm was “killing.” The extent of the damage to Henderson’s arm is also not clear yet.

UFC 164 was hosted by Milwaukee’s Bradley Center.