Mark William Calaway aka The Undertaker was hospitalized in New Orleans Sunday after suffering from a severe concussion following his match against Brock Lesnar. At Ochsner Medical Center, Taker underwent several tests including a CAT scan. He was ordered to stay overnight for for further evaluation and was released Monday morning. Lesnar beat out Undertaker at WrestleMania XXX on Sunday, ending his 21-0 streak. From: UPI