The 62-year-old, known as "The King", was taken into the locker room after he passed out.
He was given C-P-R before he was taken to the hospital.
During the televised program, Lawler's co-host explained to viewers that Lawler was breathing on his own at the emergency room and responding to tests.
Media outlets have since reported that Lawler suffered a heart attack.
Lawler made his name in wrestling in the 1970s and became famous in 19-82 for a bout with comedian Andy Kaufman.