LAS VEGAS - For the first time in more than a year, Big Show returned to WWE in the best shape of his career at No Way Out. The giant's appearance after Edge retained his World Heavyweight Championship against Rey Mysterio has shocked the sports-entertainment world -- and his showdown with WBC welterweight champion Floyd Mayweather sent riptides through the globe.

Almost nine years to the day after his initial WWE debut at St. Valentine's Day Massacre in 1999, Big Show returned to deliver a message to our fans and to the Superstars of WWE: "I have been a champion before, and it's only a matter of time before I am a champion again." Now that Big Show -- 108 pounds leaner -- has returned and served notice that he is focused and in the best shape of his life, will any member of the respective rosters be safe?

One person who wasn't exactly safe on Sunday night was Mysterio. Big Show bullied the injured Mysterio as he left the ringside area, and then goaded Floyd Mayweather -- a close friend of Rey Mysterio's -- into an altercation. Earlier in the night, Mayweather and the masked Superstar had a conversation in the locker room area, and the champion boxer wished his friend good luck in trying to regain the gold from Edge.

Considered by many to be the greatest fighter in the world, Mayweather sat at ringside enjoying No Way Out and Rey's bid for the title before Big Show began taunting him. The boxing champion learned quickly that trying to inflict pain upon the former WWE, WCW and ECW Champion is not an easy task. Big Show may have been bloodied by the left hook of Mayweather, but the incensed giant gave chase as Mayweather quickly retreated with his entourage in tow.

After the skirmish, Big Show was calmed down by Shane McMahon, who headed off the charging giant and made sure the altercation did not escalate further. Shane and Show could be seen having a heated conversation up the ramp on the way out of the arena.

What will Show's return mean to Raw, SmackDown and ECW, and which championship might Big Show eye now that he has returned and vowed to regain gold?