The 62-year-old was rushed away from ringside by paramedics who reportedly performed CPR backstage before transporting Lawler to a medical facility in Montreal, Canada.
According to WMC-TV in Memphis, Lawler will undergo heart surgery today. According to the WWE, he is expected to make a full recovery.
WMC-TV also reports Lawler's girlfriend, a Memphis resident, posted a message on Facebook last night thanking everyone for their thoughts and prayers.
"I'm getting on the first flight out of here to be with him and will keep everyone posted."
(Photo from WWE)