Alberto Del Rio, the No. 1 contender to the World Heavyweight Champion Sheamus, suffered a concussion on last week’s SmackDown and will not be medically cleared to compete against Sheamus at No Way Out this Sunday,  WWE’s Breaking News mobile alert service reported Monday

According to doctors, the concussion occurred during Del Rio’s match against The Great Khali, a bout that The Mexican Aristocrat won. ( PHOTOS | WATCH)

“The Great Khali did his chop to (Del Rio’s) head, which resulted in a concussion for Alberto,” said Dr. Michael Sampson. “He didn’t get knocked out, but he did have a memory lapse and also disorientation and a neck compression, which the MRI came back as nothing but a sprain.”

Del Rio’s injury leaves open Sheamus’ dance card at No Way Out. It is at this point unclear whether Raw and SmackDown General Manager John Laurinaitis has a replacement in mind to face The Celtic Warrior. However, with WWE Chairman Mr. McMahon set to evaluate Laurinaitis’ job performance on tonight’s special three-hour edition of Raw SuperShow, which begins at 8/7 CT, a new No. 1 contender is expected to be announced.