Floyd isn't fretting over perceived power shortage

LAS VEGAS - Floyd Mayweather says it was the first punch of the fight. His promoter thinks it came during the second round.

One shot to the head, and suddenly Manny Pacquiao decided his night might better be spent fighting on the outside.

"I let him know it's not what you think it is," Mayweather said. "You're not just going to run in there. He felt a strength he didn't expect."