Some fights just aren’t meant to be.

That appears to be the case with Jorge Rivera vs. Alessio Sakara, because their fight has been canceled now for the third straight time. On The MMA Hour with Ariel Helwani today, Jorge Rivera confirmed that his opponent, Alessio Sakara, has suffered a knee injury and won’t be able to fight him at UFC 133 next week.

Rivera confirmed the shakeup on Monday’s edition of The MMA Hour, saying that he got the call at 11:30 am eastern time.

“I thought it was a joke,” he said. “I couldn’t believe it.”

Rivera’s shock came due to the history between the men, as this is the third proposed fight between the duo that has had to be scuttled due to injury.

The duo was previously scheduled to compete at UFC 118 and then UFC 122, but injuries and illnesses scratched both fights. The third time wasn’t the charm.

Rivera still plans to compete on the card, but he doesn’t have an opponent in place as of yet. He believes it’s going to be Constantinos Philippou, who’s currently scheduled to compete against Rafael Natal on the UFC 133 undercard, but he’s still awaiting word from the UFC.

Image via Dave Mandel for Sherdog

Update: Jorge Rivera was right. The UFC announced this afternoon that he will face Constantinos Philippou at UFC 133. Philippou’s previous opponent, Rafael Natal, will now meet Paul Bradley on the UFC 133 undercard.