Zoila Gurgel, the women's 115-pound Bellator champion has suffered a terrible setback in training.

She tweeted today that she has torn the anterior-cruciate ligament (ACL) in her knee and will be unable to fight as scheduled at Bellator 57.

"I just took an MRI of my knee yesterday & results came back, I completely tore my ACL. If it was up to me, I still was planning on fighting. I am able to still move forward & box & I am very confident in that & my cardio but Doctor & coaches say "No way in hell!" So it's off to surgery hopefully soon & back to the training asap."

Gurgel had been preparing for a November 12 showdown at Bellator 57 against top female submission specialist Carina Damm in a non-title "superfight."

The "Warrior Princess" had previously been recovering from a right hand fracture suffered during a unanimous decision victory against Karina Hallinan at Bellator 35 earlier this year.

Gurgel famously made her Bellator debut against top female fighter Rosi Sexton, knocking the talented grappler out violently in the first round. She would go on to win the Bellator season three women's 115 pound tournament scoring three consecutive decision victories against Jessica Pene, Jessica Aguilar and Megumi Fujii to capture the promotion's inaugural title.

There had previously been rumors that she would participate in an upcoming women's 125-pound tournament in 2012 but that will now most certainly out of the question.

There is currently no timetable for her return.