Kevin Nash tears quad seconds after tagging in on Raw

On July 8, 2002, Kevin Nash made his highly anticipated return to Monday Night RAW after recovering from a bicep injury. He got tagged into this multi-man match, hit a big boot on Booker T, and simply went to walk across the ring to corner Bubba Ray Dudley. In a split second, his quadriceps muscle completely tore, causing him to collapse to the canvas in agonizing pain. The referee immediately threw up the dreaded "X" sign, and Nash was sidelined for nearly nine months. It remains one of the most talked-about and unfortunate injury moments in wrestling history.