Floyd Mayweather Jr
mayweather
Elvis
elvis
Manny Pacquiao
master p
yes it could be from wearing boxers
jay-z is the richest rapper of all time and still is
The best 5 boxers of all time include Mike Tyson, Evander Holyfield, Rocky Marciano and Lenox Lewis. Ezzard Charles was also a heavyweight professional.
Beatles
David Beckham
Roger Staubach
Emmit Smith
There is no pre season or off season for Boxers. Boxing is the only sport that a person must be dedicated to 100% of the time all year round.