WWE is in danger of having to change one of their title matches at WrestleMania 35 as a superstar in that has picked up an injury and may not be able to compete this Sunday.Rey Mysterio is currently scheduled to face off against Samoa Joe for the United States Championship at this year's Showcase of the Immortals this weekend, but his status for the match is in jeopardy.The Master of the 619 picked up an injury during his match on Monday Night Raw this week and now his status for the match is currently unclear as a result.Mysterio faced off against Baron Corbin in this week's Raw main event, losing to The Lone Wolf, who will face Kurt Angle at WrestleMania this weekend as well.Rey was then scheduled to face Andrade on SmackDown Live last night, but the match was pulled from the card in the hours leading up to the show as WWE announced he had an injury.

WWE announced before SmackDown that The Master of the 619 had an ankle injury and wouldn't be able to compete on the show, but they didn't clarify if it would affect his status for WrestleMania this weekend.

While it will be disappointing if Rey is unable to compete at this year's Showcase of the Immortals since he is a fan favourite, some fans might not actually be too disappointed because of the opportunity it could open for other superstars.

Many thought Mysterio's scheduled opponent for SmackDown this week, Andrade, would have been included in the United States title match at WrestleMania this year. Instead, he's only been booked for the Andre the Giant Battle Royal match.

If The Master of the 619 is unable to compete at 'Mania, it could open the door for the former NXT Champion to face Joe for the United States title instead.

If not Andrade, John Cena could be called up to replace Mysterio if he can't wrestle at the Showcase of the Immortals.

Cena was highly tipped to face Joe at this year's WrestleMania for months, but the match never came into fruition. Rey's unfortunate injury could open the door for this dream match-up to now happen.

We'll have to wait and see how serious Mysterio's ankle injury actually is and if he will miss WrestleMania. In either case, fingers crossed he is able to return to the ring soon.